78490400

素因数分解:

$2^5\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2393}}^1$

素因数の和:2454

約数の個数: 72

約数和(自身を含む): 196370244

約数和(自身を除く): 117879844

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 80, 82, 100, 160, 164, 200, 205, 328, 400, 410, 656, 800, 820, 1025, 1312, 1640, 2050, 2393, 3280, 4100, 4786, 6560, 8200, 9572, 11965, 16400, 19144, 23930, 32800, 38288, 47860, 59825, 76576, 95720, 98113, 119650, 191440, 196226, 239300, 382880, 392452, 478600, 490565, 784904, 957200, 981130, 1569808, 1914400, 1962260, 2452825, 3139616, 3924520, 4905650, 7849040, 9811300, 15698080, 19622600, 39245200, 78490400]

約数ペア:

[(1, 78490400), (2, 39245200), (4, 19622600), (5, 15698080), (8, 9811300), (10, 7849040), (16, 4905650), (20, 3924520), (25, 3139616), (32, 2452825), (40, 1962260), (41, 1914400), (50, 1569808), (80, 981130), (82, 957200), (100, 784904), (160, 490565), (164, 478600), (200, 392452), (205, 382880), (328, 239300), (400, 196226), (410, 191440), (656, 119650), (800, 98113), (820, 95720), (1025, 76576), (1312, 59825), (1640, 47860), (2050, 38288), (2393, 32800), (3280, 23930), (4100, 19144), (4786, 16400), (6560, 11965), (8200, 9572)]