20198880

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1$

素因数の和:130

約数の個数: 216

約数和(自身を含む): 75538008

約数和(自身を除く): 55339128

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 83, 90, 96, 104, 117, 120, 130, 144, 156, 160, 166, 169, 180, 195, 208, 234, 240, 249, 260, 288, 312, 332, 338, 360, 390, 415, 416, 468, 480, 498, 507, 520, 585, 624, 664, 676, 720, 747, 780, 830, 845, 936, 996, 1014, 1040, 1079, 1170, 1245, 1248, 1328, 1352, 1440, 1494, 1521, 1560, 1660, 1690, 1872, 1992, 2028, 2080, 2158, 2340, 2490, 2535, 2656, 2704, 2988, 3042, 3120, 3237, 3320, 3380, 3735, 3744, 3984, 4056, 4316, 4680, 4980, 5070, 5395, 5408, 5976, 6084, 6240, 6474, 6640, 6760, 7470, 7605, 7968, 8112, 8632, 9360, 9711, 9960, 10140, 10790, 11952, 12168, 12948, 13280, 13520, 14027, 14940, 15210, 16185, 16224, 17264, 18720, 19422, 19920, 20280, 21580, 23904, 24336, 25896, 27040, 28054, 29880, 30420, 32370, 34528, 38844, 39840, 40560, 42081, 43160, 48555, 48672, 51792, 56108, 59760, 60840, 64740, 70135, 77688, 81120, 84162, 86320, 97110, 103584, 112216, 119520, 121680, 126243, 129480, 140270, 155376, 168324, 172640, 194220, 210405, 224432, 243360, 252486, 258960, 280540, 310752, 336648, 388440, 420810, 448864, 504972, 517920, 561080, 631215, 673296, 776880, 841620, 1009944, 1122160, 1262430, 1346592, 1553760, 1683240, 2019888, 2244320, 2524860, 3366480, 4039776, 5049720, 6732960, 10099440, 20198880]

約数ペア:

[(1, 20198880), (2, 10099440), (3, 6732960), (4, 5049720), (5, 4039776), (6, 3366480), (8, 2524860), (9, 2244320), (10, 2019888), (12, 1683240), (13, 1553760), (15, 1346592), (16, 1262430), (18, 1122160), (20, 1009944), (24, 841620), (26, 776880), (30, 673296), (32, 631215), (36, 561080), (39, 517920), (40, 504972), (45, 448864), (48, 420810), (52, 388440), (60, 336648), (65, 310752), (72, 280540), (78, 258960), (80, 252486), (83, 243360), (90, 224432), (96, 210405), (104, 194220), (117, 172640), (120, 168324), (130, 155376), (144, 140270), (156, 129480), (160, 126243), (166, 121680), (169, 119520), (180, 112216), (195, 103584), (208, 97110), (234, 86320), (240, 84162), (249, 81120), (260, 77688), (288, 70135), (312, 64740), (332, 60840), (338, 59760), (360, 56108), (390, 51792), (415, 48672), (416, 48555), (468, 43160), (480, 42081), (498, 40560), (507, 39840), (520, 38844), (585, 34528), (624, 32370), (664, 30420), (676, 29880), (720, 28054), (747, 27040), (780, 25896), (830, 24336), (845, 23904), (936, 21580), (996, 20280), (1014, 19920), (1040, 19422), (1079, 18720), (1170, 17264), (1245, 16224), (1248, 16185), (1328, 15210), (1352, 14940), (1440, 14027), (1494, 13520), (1521, 13280), (1560, 12948), (1660, 12168), (1690, 11952), (1872, 10790), (1992, 10140), (2028, 9960), (2080, 9711), (2158, 9360), (2340, 8632), (2490, 8112), (2535, 7968), (2656, 7605), (2704, 7470), (2988, 6760), (3042, 6640), (3120, 6474), (3237, 6240), (3320, 6084), (3380, 5976), (3735, 5408), (3744, 5395), (3984, 5070), (4056, 4980), (4316, 4680)]