90721520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1627}}^1$

素因数の和:1698

約数の個数: 80

約数和(自身を含む): 228922848

約数和(自身を除く): 138201328

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 41, 68, 80, 82, 85, 136, 164, 170, 205, 272, 328, 340, 410, 656, 680, 697, 820, 1360, 1394, 1627, 1640, 2788, 3254, 3280, 3485, 5576, 6508, 6970, 8135, 11152, 13016, 13940, 16270, 26032, 27659, 27880, 32540, 55318, 55760, 65080, 66707, 110636, 130160, 133414, 138295, 221272, 266828, 276590, 333535, 442544, 533656, 553180, 667070, 1067312, 1106360, 1134019, 1334140, 2212720, 2268038, 2668280, 4536076, 5336560, 5670095, 9072152, 11340190, 18144304, 22680380, 45360760, 90721520]

約数ペア:

[(1, 90721520), (2, 45360760), (4, 22680380), (5, 18144304), (8, 11340190), (10, 9072152), (16, 5670095), (17, 5336560), (20, 4536076), (34, 2668280), (40, 2268038), (41, 2212720), (68, 1334140), (80, 1134019), (82, 1106360), (85, 1067312), (136, 667070), (164, 553180), (170, 533656), (205, 442544), (272, 333535), (328, 276590), (340, 266828), (410, 221272), (656, 138295), (680, 133414), (697, 130160), (820, 110636), (1360, 66707), (1394, 65080), (1627, 55760), (1640, 55318), (2788, 32540), (3254, 27880), (3280, 27659), (3485, 26032), (5576, 16270), (6508, 13940), (6970, 13016), (8135, 11152)]