20218245880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2329291}}^1$

素因数の和:2329340

約数の個数: 64

約数和(自身を含む): 53666887680

約数和(自身を除く): 33448641800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 2329291, 4658582, 9317164, 11646455, 16305037, 18634328, 23292910, 32610074, 46585820, 65220148, 72208021, 81525185, 93171640, 130440296, 144416042, 163050370, 288832084, 326100740, 361040105, 505456147, 577664168, 652201480, 722080210, 1010912294, 1444160420, 2021824588, 2527280735, 2888320840, 4043649176, 5054561470, 10109122940, 20218245880]

約数ペア:

[(1, 20218245880), (2, 10109122940), (4, 5054561470), (5, 4043649176), (7, 2888320840), (8, 2527280735), (10, 2021824588), (14, 1444160420), (20, 1010912294), (28, 722080210), (31, 652201480), (35, 577664168), (40, 505456147), (56, 361040105), (62, 326100740), (70, 288832084), (124, 163050370), (140, 144416042), (155, 130440296), (217, 93171640), (248, 81525185), (280, 72208021), (310, 65220148), (434, 46585820), (620, 32610074), (868, 23292910), (1085, 18634328), (1240, 16305037), (1736, 11646455), (2170, 9317164), (4340, 4658582), (8680, 2329291)]