20655120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{967}}^1$

素因数の和:1072

約数の個数: 80

約数和(自身を含む): 64817280

約数和(自身を除く): 44162160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 89, 120, 178, 240, 267, 356, 445, 534, 712, 890, 967, 1068, 1335, 1424, 1780, 1934, 2136, 2670, 2901, 3560, 3868, 4272, 4835, 5340, 5802, 7120, 7736, 9670, 10680, 11604, 14505, 15472, 19340, 21360, 23208, 29010, 38680, 46416, 58020, 77360, 86063, 116040, 172126, 232080, 258189, 344252, 430315, 516378, 688504, 860630, 1032756, 1290945, 1377008, 1721260, 2065512, 2581890, 3442520, 4131024, 5163780, 6885040, 10327560, 20655120]

約数ペア:

[(1, 20655120), (2, 10327560), (3, 6885040), (4, 5163780), (5, 4131024), (6, 3442520), (8, 2581890), (10, 2065512), (12, 1721260), (15, 1377008), (16, 1290945), (20, 1032756), (24, 860630), (30, 688504), (40, 516378), (48, 430315), (60, 344252), (80, 258189), (89, 232080), (120, 172126), (178, 116040), (240, 86063), (267, 77360), (356, 58020), (445, 46416), (534, 38680), (712, 29010), (890, 23208), (967, 21360), (1068, 19340), (1335, 15472), (1424, 14505), (1780, 11604), (1934, 10680), (2136, 9670), (2670, 7736), (2901, 7120), (3560, 5802), (3868, 5340), (4272, 4835)]