21697935

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{557}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 41220576

約数和(自身を除く): 19522641

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 53, 105, 147, 159, 245, 265, 371, 557, 735, 795, 1113, 1671, 1855, 2597, 2785, 3899, 5565, 7791, 8355, 11697, 12985, 19495, 27293, 29521, 38955, 58485, 81879, 88563, 136465, 147605, 206647, 409395, 442815, 619941, 1033235, 1446529, 3099705, 4339587, 7232645, 21697935]

約数ペア:

[(1, 21697935), (3, 7232645), (5, 4339587), (7, 3099705), (15, 1446529), (21, 1033235), (35, 619941), (49, 442815), (53, 409395), (105, 206647), (147, 147605), (159, 136465), (245, 88563), (265, 81879), (371, 58485), (557, 38955), (735, 29521), (795, 27293), (1113, 19495), (1671, 12985), (1855, 11697), (2597, 8355), (2785, 7791), (3899, 5565)]