18991838

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1\times {\mathrm{631}}^1$

素因数の和:883

約数の個数: 16

約数和(自身を含む): 29008800

約数和(自身を除く): 10016962

約数列:

[1, 2, 101, 149, 202, 298, 631, 1262, 15049, 30098, 63731, 94019, 127462, 188038, 9495919, 18991838]

約数ペア:

[(1, 18991838), (2, 9495919), (101, 188038), (149, 127462), (202, 94019), (298, 63731), (631, 30098), (1262, 15049)]