18890366980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1\times {\mathrm{71549}}^1$

素因数の和:71908

約数の個数: 48

約数和(自身を含む): 40725115200

約数和(自身を除く): 21834748220

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 307, 430, 614, 860, 1228, 1535, 3070, 6140, 13201, 26402, 52804, 66005, 71549, 132010, 143098, 264020, 286196, 357745, 715490, 1430980, 3076607, 6153214, 12306428, 15383035, 21965543, 30766070, 43931086, 61532140, 87862172, 109827715, 219655430, 439310860, 944518349, 1889036698, 3778073396, 4722591745, 9445183490, 18890366980]

約数ペア:

[(1, 18890366980), (2, 9445183490), (4, 4722591745), (5, 3778073396), (10, 1889036698), (20, 944518349), (43, 439310860), (86, 219655430), (172, 109827715), (215, 87862172), (307, 61532140), (430, 43931086), (614, 30766070), (860, 21965543), (1228, 15383035), (1535, 12306428), (3070, 6153214), (6140, 3076607), (13201, 1430980), (26402, 715490), (52804, 357745), (66005, 286196), (71549, 264020), (132010, 143098)]