81013840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{839}}^1$

素因数の和:940

約数の個数: 80

約数和(自身を含む): 202487040

約数和(自身を除く): 121473200

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 71, 80, 85, 136, 142, 170, 272, 284, 340, 355, 568, 680, 710, 839, 1136, 1207, 1360, 1420, 1678, 2414, 2840, 3356, 4195, 4828, 5680, 6035, 6712, 8390, 9656, 12070, 13424, 14263, 16780, 19312, 24140, 28526, 33560, 48280, 57052, 59569, 67120, 71315, 96560, 114104, 119138, 142630, 228208, 238276, 285260, 297845, 476552, 570520, 595690, 953104, 1012673, 1141040, 1191380, 2025346, 2382760, 4050692, 4765520, 5063365, 8101384, 10126730, 16202768, 20253460, 40506920, 81013840]

約数ペア:

[(1, 81013840), (2, 40506920), (4, 20253460), (5, 16202768), (8, 10126730), (10, 8101384), (16, 5063365), (17, 4765520), (20, 4050692), (34, 2382760), (40, 2025346), (68, 1191380), (71, 1141040), (80, 1012673), (85, 953104), (136, 595690), (142, 570520), (170, 476552), (272, 297845), (284, 285260), (340, 238276), (355, 228208), (568, 142630), (680, 119138), (710, 114104), (839, 96560), (1136, 71315), (1207, 67120), (1360, 59569), (1420, 57052), (1678, 48280), (2414, 33560), (2840, 28526), (3356, 24140), (4195, 19312), (4828, 16780), (5680, 14263), (6035, 13424), (6712, 12070), (8390, 9656)]