161616640

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4073}}^1$

素因数の和:4125

約数の個数: 72

約数和(自身を含む): 399708288

約数和(自身を除く): 238091648

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, 1984, 2480, 3968, 4073, 4960, 7936, 8146, 9920, 16292, 19840, 20365, 32584, 39680, 40730, 65168, 81460, 126263, 130336, 162920, 252526, 260672, 325840, 505052, 521344, 631315, 651680, 1010104, 1042688, 1262630, 1303360, 2020208, 2525260, 2606720, 4040416, 5050520, 5213440, 8080832, 10101040, 16161664, 20202080, 32323328, 40404160, 80808320, 161616640]

約数ペア:

[(1, 161616640), (2, 80808320), (4, 40404160), (5, 32323328), (8, 20202080), (10, 16161664), (16, 10101040), (20, 8080832), (31, 5213440), (32, 5050520), (40, 4040416), (62, 2606720), (64, 2525260), (80, 2020208), (124, 1303360), (128, 1262630), (155, 1042688), (160, 1010104), (248, 651680), (256, 631315), (310, 521344), (320, 505052), (496, 325840), (620, 260672), (640, 252526), (992, 162920), (1240, 130336), (1280, 126263), (1984, 81460), (2480, 65168), (3968, 40730), (4073, 39680), (4960, 32584), (7936, 20365), (8146, 19840), (9920, 16292)]