20057000

素因数分解:

$2^3\times 5^3\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:699

約数の個数: 64

約数和(自身を含む): 48522240

約数和(自身を除く): 28465240

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 500, 620, 647, 775, 1000, 1240, 1294, 1550, 2588, 3100, 3235, 3875, 5176, 6200, 6470, 7750, 12940, 15500, 16175, 20057, 25880, 31000, 32350, 40114, 64700, 80228, 80875, 100285, 129400, 160456, 161750, 200570, 323500, 401140, 501425, 647000, 802280, 1002850, 2005700, 2507125, 4011400, 5014250, 10028500, 20057000]

約数ペア:

[(1, 20057000), (2, 10028500), (4, 5014250), (5, 4011400), (8, 2507125), (10, 2005700), (20, 1002850), (25, 802280), (31, 647000), (40, 501425), (50, 401140), (62, 323500), (100, 200570), (124, 161750), (125, 160456), (155, 129400), (200, 100285), (248, 80875), (250, 80228), (310, 64700), (500, 40114), (620, 32350), (647, 31000), (775, 25880), (1000, 20057), (1240, 16175), (1294, 15500), (1550, 12940), (2588, 7750), (3100, 6470), (3235, 6200), (3875, 5176)]