21478100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{503}}^1$

素因数の和:585

約数の個数: 72

約数和(自身を含む): 54246528

約数和(自身を除く): 32768428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 61, 70, 100, 122, 140, 175, 244, 305, 350, 427, 503, 610, 700, 854, 1006, 1220, 1525, 1708, 2012, 2135, 2515, 3050, 3521, 4270, 5030, 6100, 7042, 8540, 10060, 10675, 12575, 14084, 17605, 21350, 25150, 30683, 35210, 42700, 50300, 61366, 70420, 88025, 122732, 153415, 176050, 214781, 306830, 352100, 429562, 613660, 767075, 859124, 1073905, 1534150, 2147810, 3068300, 4295620, 5369525, 10739050, 21478100]

約数ペア:

[(1, 21478100), (2, 10739050), (4, 5369525), (5, 4295620), (7, 3068300), (10, 2147810), (14, 1534150), (20, 1073905), (25, 859124), (28, 767075), (35, 613660), (50, 429562), (61, 352100), (70, 306830), (100, 214781), (122, 176050), (140, 153415), (175, 122732), (244, 88025), (305, 70420), (350, 61366), (427, 50300), (503, 42700), (610, 35210), (700, 30683), (854, 25150), (1006, 21350), (1220, 17605), (1525, 14084), (1708, 12575), (2012, 10675), (2135, 10060), (2515, 8540), (3050, 7042), (3521, 6100), (4270, 5030)]