19497905

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{457}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 28491264

約数和(自身を除く): 8993359

約数列:

[1, 5, 7, 23, 35, 53, 115, 161, 265, 371, 457, 805, 1219, 1855, 2285, 3199, 6095, 8533, 10511, 15995, 24221, 42665, 52555, 73577, 121105, 169547, 367885, 557083, 847735, 2785415, 3899581, 19497905]

約数ペア:

[(1, 19497905), (5, 3899581), (7, 2785415), (23, 847735), (35, 557083), (53, 367885), (115, 169547), (161, 121105), (265, 73577), (371, 52555), (457, 42665), (805, 24221), (1219, 15995), (1855, 10511), (2285, 8533), (3199, 6095)]