8521420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 19268928

約数和(自身を除く): 10747508

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 142, 170, 284, 340, 353, 355, 706, 710, 1207, 1412, 1420, 1765, 2414, 3530, 4828, 6001, 6035, 7060, 12002, 12070, 24004, 24140, 25063, 30005, 50126, 60010, 100252, 120020, 125315, 250630, 426071, 501260, 852142, 1704284, 2130355, 4260710, 8521420]

約数ペア:

[(1, 8521420), (2, 4260710), (4, 2130355), (5, 1704284), (10, 852142), (17, 501260), (20, 426071), (34, 250630), (68, 125315), (71, 120020), (85, 100252), (142, 60010), (170, 50126), (284, 30005), (340, 25063), (353, 24140), (355, 24004), (706, 12070), (710, 12002), (1207, 7060), (1412, 6035), (1420, 6001), (1765, 4828), (2414, 3530)]