21005640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:156

約数の個数: 192

約数和(自身を含む): 74692800

約数和(自身を除く): 53687160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 37, 38, 40, 45, 57, 60, 72, 74, 76, 83, 90, 95, 111, 114, 120, 148, 152, 166, 171, 180, 185, 190, 222, 228, 249, 285, 296, 332, 333, 342, 360, 370, 380, 415, 444, 456, 498, 555, 570, 664, 666, 684, 703, 740, 747, 760, 830, 855, 888, 996, 1110, 1140, 1245, 1332, 1368, 1406, 1480, 1494, 1577, 1660, 1665, 1710, 1992, 2109, 2220, 2280, 2490, 2664, 2812, 2988, 3071, 3154, 3320, 3330, 3420, 3515, 3735, 4218, 4440, 4731, 4980, 5624, 5976, 6142, 6308, 6327, 6660, 6840, 7030, 7470, 7885, 8436, 9213, 9462, 9960, 10545, 12284, 12616, 12654, 13320, 14060, 14193, 14940, 15355, 15770, 16872, 18426, 18924, 21090, 23655, 24568, 25308, 27639, 28120, 28386, 29880, 30710, 31540, 31635, 36852, 37848, 42180, 46065, 47310, 50616, 55278, 56772, 58349, 61420, 63080, 63270, 70965, 73704, 84360, 92130, 94620, 110556, 113544, 116698, 122840, 126540, 138195, 141930, 175047, 184260, 189240, 221112, 233396, 253080, 276390, 283860, 291745, 350094, 368520, 466792, 525141, 552780, 567720, 583490, 700188, 875235, 1050282, 1105560, 1166980, 1400376, 1750470, 2100564, 2333960, 2625705, 3500940, 4201128, 5251410, 7001880, 10502820, 21005640]

約数ペア:

[(1, 21005640), (2, 10502820), (3, 7001880), (4, 5251410), (5, 4201128), (6, 3500940), (8, 2625705), (9, 2333960), (10, 2100564), (12, 1750470), (15, 1400376), (18, 1166980), (19, 1105560), (20, 1050282), (24, 875235), (30, 700188), (36, 583490), (37, 567720), (38, 552780), (40, 525141), (45, 466792), (57, 368520), (60, 350094), (72, 291745), (74, 283860), (76, 276390), (83, 253080), (90, 233396), (95, 221112), (111, 189240), (114, 184260), (120, 175047), (148, 141930), (152, 138195), (166, 126540), (171, 122840), (180, 116698), (185, 113544), (190, 110556), (222, 94620), (228, 92130), (249, 84360), (285, 73704), (296, 70965), (332, 63270), (333, 63080), (342, 61420), (360, 58349), (370, 56772), (380, 55278), (415, 50616), (444, 47310), (456, 46065), (498, 42180), (555, 37848), (570, 36852), (664, 31635), (666, 31540), (684, 30710), (703, 29880), (740, 28386), (747, 28120), (760, 27639), (830, 25308), (855, 24568), (888, 23655), (996, 21090), (1110, 18924), (1140, 18426), (1245, 16872), (1332, 15770), (1368, 15355), (1406, 14940), (1480, 14193), (1494, 14060), (1577, 13320), (1660, 12654), (1665, 12616), (1710, 12284), (1992, 10545), (2109, 9960), (2220, 9462), (2280, 9213), (2490, 8436), (2664, 7885), (2812, 7470), (2988, 7030), (3071, 6840), (3154, 6660), (3320, 6327), (3330, 6308), (3420, 6142), (3515, 5976), (3735, 5624), (4218, 4980), (4440, 4731)]