20145956800

素因数分解:

$2^6\times 5^2\times {\mathrm{41}}^1\times {\mathrm{307103}}^1$

素因数の和:307166

約数の個数: 84

約数和(自身を含む): 50780874816

約数和(自身を除く): 30634918016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 64, 80, 82, 100, 160, 164, 200, 205, 320, 328, 400, 410, 656, 800, 820, 1025, 1312, 1600, 1640, 2050, 2624, 3280, 4100, 6560, 8200, 13120, 16400, 32800, 65600, 307103, 614206, 1228412, 1535515, 2456824, 3071030, 4913648, 6142060, 7677575, 9827296, 12284120, 12591223, 15355150, 19654592, 24568240, 25182446, 30710300, 49136480, 50364892, 61420600, 62956115, 98272960, 100729784, 122841200, 125912230, 201459568, 245682400, 251824460, 314780575, 402919136, 491364800, 503648920, 629561150, 805838272, 1007297840, 1259122300, 2014595680, 2518244600, 4029191360, 5036489200, 10072978400, 20145956800]

約数ペア:

[(1, 20145956800), (2, 10072978400), (4, 5036489200), (5, 4029191360), (8, 2518244600), (10, 2014595680), (16, 1259122300), (20, 1007297840), (25, 805838272), (32, 629561150), (40, 503648920), (41, 491364800), (50, 402919136), (64, 314780575), (80, 251824460), (82, 245682400), (100, 201459568), (160, 125912230), (164, 122841200), (200, 100729784), (205, 98272960), (320, 62956115), (328, 61420600), (400, 50364892), (410, 49136480), (656, 30710300), (800, 25182446), (820, 24568240), (1025, 19654592), (1312, 15355150), (1600, 12591223), (1640, 12284120), (2050, 9827296), (2624, 7677575), (3280, 6142060), (4100, 4913648), (6560, 3071030), (8200, 2456824), (13120, 1535515), (16400, 1228412), (32800, 614206), (65600, 307103)]