21761920

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{919}}^1$

素因数の和:975

約数の個数: 64

約数和(自身を含む): 53488800

約数和(自身を除く): 31726880

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, 919, 1184, 1480, 1838, 2368, 2960, 3676, 4595, 4736, 5920, 7352, 9190, 11840, 14704, 18380, 23680, 29408, 34003, 36760, 58816, 68006, 73520, 117632, 136012, 147040, 170015, 272024, 294080, 340030, 544048, 588160, 680060, 1088096, 1360120, 2176192, 2720240, 4352384, 5440480, 10880960, 21761920]

約数ペア:

[(1, 21761920), (2, 10880960), (4, 5440480), (5, 4352384), (8, 2720240), (10, 2176192), (16, 1360120), (20, 1088096), (32, 680060), (37, 588160), (40, 544048), (64, 340030), (74, 294080), (80, 272024), (128, 170015), (148, 147040), (160, 136012), (185, 117632), (296, 73520), (320, 68006), (370, 58816), (592, 36760), (640, 34003), (740, 29408), (919, 23680), (1184, 18380), (1480, 14704), (1838, 11840), (2368, 9190), (2960, 7352), (3676, 5920), (4595, 4736)]