21243835

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 6957125

約数列:

[1, 5, 23, 31, 59, 101, 115, 155, 295, 505, 713, 1357, 1829, 2323, 3131, 3565, 5959, 6785, 9145, 11615, 15655, 29795, 42067, 72013, 137057, 184729, 210335, 360065, 685285, 923645, 4248767, 21243835]

約数ペア:

[(1, 21243835), (5, 4248767), (23, 923645), (31, 685285), (59, 360065), (101, 210335), (115, 184729), (155, 137057), (295, 72013), (505, 42067), (713, 29795), (1357, 15655), (1829, 11615), (2323, 9145), (3131, 6785), (3565, 5959)]