1999980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 6237504

約数和(自身を除く): 4237524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 45, 60, 82, 90, 123, 164, 180, 205, 246, 271, 369, 410, 492, 542, 615, 738, 813, 820, 1084, 1230, 1355, 1476, 1626, 1845, 2439, 2460, 2710, 3252, 3690, 4065, 4878, 5420, 7380, 8130, 9756, 11111, 12195, 16260, 22222, 24390, 33333, 44444, 48780, 55555, 66666, 99999, 111110, 133332, 166665, 199998, 222220, 333330, 399996, 499995, 666660, 999990, 1999980]

約数ペア:

[(1, 1999980), (2, 999990), (3, 666660), (4, 499995), (5, 399996), (6, 333330), (9, 222220), (10, 199998), (12, 166665), (15, 133332), (18, 111110), (20, 99999), (30, 66666), (36, 55555), (41, 48780), (45, 44444), (60, 33333), (82, 24390), (90, 22222), (123, 16260), (164, 12195), (180, 11111), (205, 9756), (246, 8130), (271, 7380), (369, 5420), (410, 4878), (492, 4065), (542, 3690), (615, 3252), (738, 2710), (813, 2460), (820, 2439), (1084, 1845), (1230, 1626), (1355, 1476)]