72409880

素因数分解:

$2^3\times 5^1\times {\mathrm{1810247}}^1$

素因数の和:1810258

約数の個数: 16

約数和(自身を含む): 162922320

約数和(自身を除く): 90512440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1810247, 3620494, 7240988, 9051235, 14481976, 18102470, 36204940, 72409880]

約数ペア:

[(1, 72409880), (2, 36204940), (4, 18102470), (5, 14481976), (8, 9051235), (10, 7240988), (20, 3620494), (40, 1810247)]