17942990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:413

約数の個数: 64

約数和(自身を含む): 38537856

約数和(自身を除く): 20594866

約数列:

[1, 2, 5, 10, 13, 17, 23, 26, 34, 46, 65, 85, 115, 130, 170, 221, 230, 299, 353, 391, 442, 598, 706, 782, 1105, 1495, 1765, 1955, 2210, 2990, 3530, 3910, 4589, 5083, 6001, 8119, 9178, 10166, 12002, 16238, 22945, 25415, 30005, 40595, 45890, 50830, 60010, 78013, 81190, 105547, 138023, 156026, 211094, 276046, 390065, 527735, 690115, 780130, 1055470, 1380230, 1794299, 3588598, 8971495, 17942990]

約数ペア:

[(1, 17942990), (2, 8971495), (5, 3588598), (10, 1794299), (13, 1380230), (17, 1055470), (23, 780130), (26, 690115), (34, 527735), (46, 390065), (65, 276046), (85, 211094), (115, 156026), (130, 138023), (170, 105547), (221, 81190), (230, 78013), (299, 60010), (353, 50830), (391, 45890), (442, 40595), (598, 30005), (706, 25415), (782, 22945), (1105, 16238), (1495, 12002), (1765, 10166), (1955, 9178), (2210, 8119), (2990, 6001), (3530, 5083), (3910, 4589)]