78288640

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1973}}^1$

素因数の和:2025

約数の個数: 72

約数和(自身を含む): 193673088

約数和(自身を除く): 115384448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1973, 1984, 2480, 3946, 3968, 4960, 7892, 7936, 9865, 9920, 15784, 19730, 19840, 31568, 39460, 39680, 61163, 63136, 78920, 122326, 126272, 157840, 244652, 252544, 305815, 315680, 489304, 505088, 611630, 631360, 978608, 1223260, 1262720, 1957216, 2446520, 2525440, 3914432, 4893040, 7828864, 9786080, 15657728, 19572160, 39144320, 78288640]

約数ペア:

[(1, 78288640), (2, 39144320), (4, 19572160), (5, 15657728), (8, 9786080), (10, 7828864), (16, 4893040), (20, 3914432), (31, 2525440), (32, 2446520), (40, 1957216), (62, 1262720), (64, 1223260), (80, 978608), (124, 631360), (128, 611630), (155, 505088), (160, 489304), (248, 315680), (256, 305815), (310, 252544), (320, 244652), (496, 157840), (620, 126272), (640, 122326), (992, 78920), (1240, 63136), (1280, 61163), (1973, 39680), (1984, 39460), (2480, 31568), (3946, 19840), (3968, 19730), (4960, 15784), (7892, 9920), (7936, 9865)]