20795420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1973}}^1$

素因数の和:2030

約数の個数: 48

約数和(自身を含む): 47755008

約数和(自身を除く): 26959588

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 310, 340, 527, 620, 1054, 1973, 2108, 2635, 3946, 5270, 7892, 9865, 10540, 19730, 33541, 39460, 61163, 67082, 122326, 134164, 167705, 244652, 305815, 335410, 611630, 670820, 1039771, 1223260, 2079542, 4159084, 5198855, 10397710, 20795420]

約数ペア:

[(1, 20795420), (2, 10397710), (4, 5198855), (5, 4159084), (10, 2079542), (17, 1223260), (20, 1039771), (31, 670820), (34, 611630), (62, 335410), (68, 305815), (85, 244652), (124, 167705), (155, 134164), (170, 122326), (310, 67082), (340, 61163), (527, 39460), (620, 33541), (1054, 19730), (1973, 10540), (2108, 9865), (2635, 7892), (3946, 5270)]