19983840

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:145

約数の個数: 192

約数和(自身を含む): 69672960

約数和(自身を除く): 49689120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 31, 32, 34, 40, 48, 51, 60, 62, 68, 79, 80, 85, 93, 96, 102, 120, 124, 136, 155, 158, 160, 170, 186, 204, 237, 240, 248, 255, 272, 310, 316, 340, 372, 395, 408, 465, 474, 480, 496, 510, 527, 544, 620, 632, 680, 744, 790, 816, 930, 948, 992, 1020, 1054, 1185, 1240, 1264, 1343, 1360, 1488, 1580, 1581, 1632, 1860, 1896, 2040, 2108, 2370, 2449, 2480, 2528, 2635, 2686, 2720, 2976, 3160, 3162, 3720, 3792, 4029, 4080, 4216, 4740, 4898, 4960, 5270, 5372, 6320, 6324, 6715, 7347, 7440, 7584, 7905, 8058, 8160, 8432, 9480, 9796, 10540, 10744, 12245, 12640, 12648, 13430, 14694, 14880, 15810, 16116, 16864, 18960, 19592, 20145, 21080, 21488, 24490, 25296, 26860, 29388, 31620, 32232, 36735, 37920, 39184, 40290, 41633, 42160, 42976, 48980, 50592, 53720, 58776, 63240, 64464, 73470, 78368, 80580, 83266, 84320, 97960, 107440, 117552, 124899, 126480, 128928, 146940, 161160, 166532, 195920, 208165, 214880, 235104, 249798, 252960, 293880, 322320, 333064, 391840, 416330, 499596, 587760, 624495, 644640, 666128, 832660, 999192, 1175520, 1248990, 1332256, 1665320, 1998384, 2497980, 3330640, 3996768, 4995960, 6661280, 9991920, 19983840]

約数ペア:

[(1, 19983840), (2, 9991920), (3, 6661280), (4, 4995960), (5, 3996768), (6, 3330640), (8, 2497980), (10, 1998384), (12, 1665320), (15, 1332256), (16, 1248990), (17, 1175520), (20, 999192), (24, 832660), (30, 666128), (31, 644640), (32, 624495), (34, 587760), (40, 499596), (48, 416330), (51, 391840), (60, 333064), (62, 322320), (68, 293880), (79, 252960), (80, 249798), (85, 235104), (93, 214880), (96, 208165), (102, 195920), (120, 166532), (124, 161160), (136, 146940), (155, 128928), (158, 126480), (160, 124899), (170, 117552), (186, 107440), (204, 97960), (237, 84320), (240, 83266), (248, 80580), (255, 78368), (272, 73470), (310, 64464), (316, 63240), (340, 58776), (372, 53720), (395, 50592), (408, 48980), (465, 42976), (474, 42160), (480, 41633), (496, 40290), (510, 39184), (527, 37920), (544, 36735), (620, 32232), (632, 31620), (680, 29388), (744, 26860), (790, 25296), (816, 24490), (930, 21488), (948, 21080), (992, 20145), (1020, 19592), (1054, 18960), (1185, 16864), (1240, 16116), (1264, 15810), (1343, 14880), (1360, 14694), (1488, 13430), (1580, 12648), (1581, 12640), (1632, 12245), (1860, 10744), (1896, 10540), (2040, 9796), (2108, 9480), (2370, 8432), (2449, 8160), (2480, 8058), (2528, 7905), (2635, 7584), (2686, 7440), (2720, 7347), (2976, 6715), (3160, 6324), (3162, 6320), (3720, 5372), (3792, 5270), (4029, 4960), (4080, 4898), (4216, 4740)]