2560521100

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{173}}^1\times {\mathrm{1663}}^1$

素因数の和:1939

約数の個数: 72

約数和(自身を含む): 5654638080

約数和(自身を除く): 3094116980

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 173, 178, 346, 356, 445, 692, 865, 890, 1663, 1730, 1780, 2225, 3326, 3460, 4325, 4450, 6652, 8315, 8650, 8900, 15397, 16630, 17300, 30794, 33260, 41575, 61588, 76985, 83150, 148007, 153970, 166300, 287699, 296014, 307940, 384925, 575398, 592028, 740035, 769850, 1150796, 1438495, 1480070, 1539700, 2876990, 2960140, 3700175, 5753980, 7192475, 7400350, 14384950, 14800700, 25605211, 28769900, 51210422, 102420844, 128026055, 256052110, 512104220, 640130275, 1280260550, 2560521100]

約数ペア:

[(1, 2560521100), (2, 1280260550), (4, 640130275), (5, 512104220), (10, 256052110), (20, 128026055), (25, 102420844), (50, 51210422), (89, 28769900), (100, 25605211), (173, 14800700), (178, 14384950), (346, 7400350), (356, 7192475), (445, 5753980), (692, 3700175), (865, 2960140), (890, 2876990), (1663, 1539700), (1730, 1480070), (1780, 1438495), (2225, 1150796), (3326, 769850), (3460, 740035), (4325, 592028), (4450, 575398), (6652, 384925), (8315, 307940), (8650, 296014), (8900, 287699), (15397, 166300), (16630, 153970), (17300, 148007), (30794, 83150), (33260, 76985), (41575, 61588)]