641970

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{1019}}^1$

素因数の和:1039

約数の個数: 48

約数和(自身を含む): 1909440

約数和(自身を除く): 1267470

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 1019, 2038, 3057, 5095, 6114, 7133, 9171, 10190, 14266, 15285, 18342, 21399, 30570, 35665, 42798, 45855, 64197, 71330, 91710, 106995, 128394, 213990, 320985, 641970]

約数ペア:

[(1, 641970), (2, 320985), (3, 213990), (5, 128394), (6, 106995), (7, 91710), (9, 71330), (10, 64197), (14, 45855), (15, 42798), (18, 35665), (21, 30570), (30, 21399), (35, 18342), (42, 15285), (45, 14266), (63, 10190), (70, 9171), (90, 7133), (105, 6114), (126, 5095), (210, 3057), (315, 2038), (630, 1019)]