20180967200

素因数分解:

$2^5\times 5^2\times {\mathrm{571}}^1\times {\mathrm{44179}}^1$

素因数の和:44770

約数の個数: 72

約数和(自身を含む): 49354184880

約数和(自身を除く): 29173217680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 571, 800, 1142, 2284, 2855, 4568, 5710, 9136, 11420, 14275, 18272, 22840, 28550, 44179, 45680, 57100, 88358, 91360, 114200, 176716, 220895, 228400, 353432, 441790, 456800, 706864, 883580, 1104475, 1413728, 1767160, 2208950, 3534320, 4417900, 7068640, 8835800, 17671600, 25226209, 35343200, 50452418, 100904836, 126131045, 201809672, 252262090, 403619344, 504524180, 630655225, 807238688, 1009048360, 1261310450, 2018096720, 2522620900, 4036193440, 5045241800, 10090483600, 20180967200]

約数ペア:

[(1, 20180967200), (2, 10090483600), (4, 5045241800), (5, 4036193440), (8, 2522620900), (10, 2018096720), (16, 1261310450), (20, 1009048360), (25, 807238688), (32, 630655225), (40, 504524180), (50, 403619344), (80, 252262090), (100, 201809672), (160, 126131045), (200, 100904836), (400, 50452418), (571, 35343200), (800, 25226209), (1142, 17671600), (2284, 8835800), (2855, 7068640), (4568, 4417900), (5710, 3534320), (9136, 2208950), (11420, 1767160), (14275, 1413728), (18272, 1104475), (22840, 883580), (28550, 706864), (44179, 456800), (45680, 441790), (57100, 353432), (88358, 228400), (91360, 220895), (114200, 176716)]