21072840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{2621}}^1$

素因数の和:2702

約数の個数: 64

約数和(自身を含む): 64186560

約数和(自身を除く): 43113720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 67, 120, 134, 201, 268, 335, 402, 536, 670, 804, 1005, 1340, 1608, 2010, 2621, 2680, 4020, 5242, 7863, 8040, 10484, 13105, 15726, 20968, 26210, 31452, 39315, 52420, 62904, 78630, 104840, 157260, 175607, 314520, 351214, 526821, 702428, 878035, 1053642, 1404856, 1756070, 2107284, 2634105, 3512140, 4214568, 5268210, 7024280, 10536420, 21072840]

約数ペア:

[(1, 21072840), (2, 10536420), (3, 7024280), (4, 5268210), (5, 4214568), (6, 3512140), (8, 2634105), (10, 2107284), (12, 1756070), (15, 1404856), (20, 1053642), (24, 878035), (30, 702428), (40, 526821), (60, 351214), (67, 314520), (120, 175607), (134, 157260), (201, 104840), (268, 78630), (335, 62904), (402, 52420), (536, 39315), (670, 31452), (804, 26210), (1005, 20968), (1340, 15726), (1608, 13105), (2010, 10484), (2621, 8040), (2680, 7863), (4020, 5242)]