19812120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1543}}^1$

素因数の和:1664

約数の個数: 64

約数和(自身を含む): 60030720

約数和(自身を除く): 40218600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 107, 120, 214, 321, 428, 535, 642, 856, 1070, 1284, 1543, 1605, 2140, 2568, 3086, 3210, 4280, 4629, 6172, 6420, 7715, 9258, 12344, 12840, 15430, 18516, 23145, 30860, 37032, 46290, 61720, 92580, 165101, 185160, 330202, 495303, 660404, 825505, 990606, 1320808, 1651010, 1981212, 2476515, 3302020, 3962424, 4953030, 6604040, 9906060, 19812120]

約数ペア:

[(1, 19812120), (2, 9906060), (3, 6604040), (4, 4953030), (5, 3962424), (6, 3302020), (8, 2476515), (10, 1981212), (12, 1651010), (15, 1320808), (20, 990606), (24, 825505), (30, 660404), (40, 495303), (60, 330202), (107, 185160), (120, 165101), (214, 92580), (321, 61720), (428, 46290), (535, 37032), (642, 30860), (856, 23145), (1070, 18516), (1284, 15430), (1543, 12840), (1605, 12344), (2140, 9258), (2568, 7715), (3086, 6420), (3210, 6172), (4280, 4629)]