73790980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89989}}^1$

素因数の和:90039

約数の個数: 24

約数和(自身を含む): 158742360

約数和(自身を除く): 84951380

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 89989, 179978, 359956, 449945, 899890, 1799780, 3689549, 7379098, 14758196, 18447745, 36895490, 73790980]

約数ペア:

[(1, 73790980), (2, 36895490), (4, 18447745), (5, 14758196), (10, 7379098), (20, 3689549), (41, 1799780), (82, 899890), (164, 449945), (205, 359956), (410, 179978), (820, 89989)]