21221830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4153}}^1$

素因数の和:4240

約数の個数: 32

約数和(自身を含む): 44265024

約数和(自身を除く): 23043194

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 73, 146, 365, 511, 730, 1022, 2555, 4153, 5110, 8306, 20765, 29071, 41530, 58142, 145355, 290710, 303169, 606338, 1515845, 2122183, 3031690, 4244366, 10610915, 21221830]

約数ペア:

[(1, 21221830), (2, 10610915), (5, 4244366), (7, 3031690), (10, 2122183), (14, 1515845), (35, 606338), (70, 303169), (73, 290710), (146, 145355), (365, 58142), (511, 41530), (730, 29071), (1022, 20765), (2555, 8306), (4153, 5110)]