21514640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{373}}^1$

素因数の和:496

約数の個数: 80

約数和(自身を含む): 57877248

約数和(自身を除く): 36362608

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 103, 112, 140, 206, 280, 373, 412, 515, 560, 721, 746, 824, 1030, 1442, 1492, 1648, 1865, 2060, 2611, 2884, 2984, 3605, 3730, 4120, 5222, 5768, 5968, 7210, 7460, 8240, 10444, 11536, 13055, 14420, 14920, 20888, 26110, 28840, 29840, 38419, 41776, 52220, 57680, 76838, 104440, 153676, 192095, 208880, 268933, 307352, 384190, 537866, 614704, 768380, 1075732, 1344665, 1536760, 2151464, 2689330, 3073520, 4302928, 5378660, 10757320, 21514640]

約数ペア:

[(1, 21514640), (2, 10757320), (4, 5378660), (5, 4302928), (7, 3073520), (8, 2689330), (10, 2151464), (14, 1536760), (16, 1344665), (20, 1075732), (28, 768380), (35, 614704), (40, 537866), (56, 384190), (70, 307352), (80, 268933), (103, 208880), (112, 192095), (140, 153676), (206, 104440), (280, 76838), (373, 57680), (412, 52220), (515, 41776), (560, 38419), (721, 29840), (746, 28840), (824, 26110), (1030, 20888), (1442, 14920), (1492, 14420), (1648, 13055), (1865, 11536), (2060, 10444), (2611, 8240), (2884, 7460), (2984, 7210), (3605, 5968), (3730, 5768), (4120, 5222)]