61406440

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 143078400

約数和(自身を除く): 81671960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 89, 94, 178, 188, 235, 356, 367, 376, 445, 470, 712, 734, 890, 940, 1468, 1780, 1835, 1880, 2936, 3560, 3670, 4183, 7340, 8366, 14680, 16732, 17249, 20915, 32663, 33464, 34498, 41830, 65326, 68996, 83660, 86245, 130652, 137992, 163315, 167320, 172490, 261304, 326630, 344980, 653260, 689960, 1306520, 1535161, 3070322, 6140644, 7675805, 12281288, 15351610, 30703220, 61406440]

約数ペア:

[(1, 61406440), (2, 30703220), (4, 15351610), (5, 12281288), (8, 7675805), (10, 6140644), (20, 3070322), (40, 1535161), (47, 1306520), (89, 689960), (94, 653260), (178, 344980), (188, 326630), (235, 261304), (356, 172490), (367, 167320), (376, 163315), (445, 137992), (470, 130652), (712, 86245), (734, 83660), (890, 68996), (940, 65326), (1468, 41830), (1780, 34498), (1835, 33464), (1880, 32663), (2936, 20915), (3560, 17249), (3670, 16732), (4183, 14680), (7340, 8366)]