21176560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{677}}^1$

素因数の和:730

約数の個数: 80

約数和(自身を含む): 54478656

約数和(自身を除く): 33302096

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 677, 680, 782, 920, 1354, 1360, 1564, 1840, 1955, 2708, 3128, 3385, 3910, 5416, 6256, 6770, 7820, 10832, 11509, 13540, 15571, 15640, 23018, 27080, 31142, 31280, 46036, 54160, 57545, 62284, 77855, 92072, 115090, 124568, 155710, 184144, 230180, 249136, 264707, 311420, 460360, 529414, 622840, 920720, 1058828, 1245680, 1323535, 2117656, 2647070, 4235312, 5294140, 10588280, 21176560]

約数ペア:

[(1, 21176560), (2, 10588280), (4, 5294140), (5, 4235312), (8, 2647070), (10, 2117656), (16, 1323535), (17, 1245680), (20, 1058828), (23, 920720), (34, 622840), (40, 529414), (46, 460360), (68, 311420), (80, 264707), (85, 249136), (92, 230180), (115, 184144), (136, 155710), (170, 124568), (184, 115090), (230, 92072), (272, 77855), (340, 62284), (368, 57545), (391, 54160), (460, 46036), (677, 31280), (680, 31142), (782, 27080), (920, 23018), (1354, 15640), (1360, 15571), (1564, 13540), (1840, 11509), (1955, 10832), (2708, 7820), (3128, 6770), (3385, 6256), (3910, 5416)]