81672320

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3449}}^1$

素因数の和:3505

約数の個数: 64

約数和(自身を含む): 200583000

約数和(自身を除く): 118910680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 296, 320, 370, 592, 640, 740, 1184, 1480, 2368, 2960, 3449, 4736, 5920, 6898, 11840, 13796, 17245, 23680, 27592, 34490, 55184, 68980, 110368, 127613, 137960, 220736, 255226, 275920, 441472, 510452, 551840, 638065, 1020904, 1103680, 1276130, 2041808, 2207360, 2552260, 4083616, 5104520, 8167232, 10209040, 16334464, 20418080, 40836160, 81672320]

約数ペア:

[(1, 81672320), (2, 40836160), (4, 20418080), (5, 16334464), (8, 10209040), (10, 8167232), (16, 5104520), (20, 4083616), (32, 2552260), (37, 2207360), (40, 2041808), (64, 1276130), (74, 1103680), (80, 1020904), (128, 638065), (148, 551840), (160, 510452), (185, 441472), (296, 275920), (320, 255226), (370, 220736), (592, 137960), (640, 127613), (740, 110368), (1184, 68980), (1480, 55184), (2368, 34490), (2960, 27592), (3449, 23680), (4736, 17245), (5920, 13796), (6898, 11840)]