20402760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{227}}^1$

素因数の和:355

約数の個数: 128

約数和(自身を含む): 70917120

約数和(自身を除く): 50514360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 107, 120, 140, 168, 210, 214, 227, 280, 321, 420, 428, 454, 535, 642, 681, 749, 840, 856, 908, 1070, 1135, 1284, 1362, 1498, 1589, 1605, 1816, 2140, 2247, 2270, 2568, 2724, 2996, 3178, 3210, 3405, 3745, 4280, 4494, 4540, 4767, 5448, 5992, 6356, 6420, 6810, 7490, 7945, 8988, 9080, 9534, 11235, 12712, 12840, 13620, 14980, 15890, 17976, 19068, 22470, 23835, 24289, 27240, 29960, 31780, 38136, 44940, 47670, 48578, 63560, 72867, 89880, 95340, 97156, 121445, 145734, 170023, 190680, 194312, 242890, 291468, 340046, 364335, 485780, 510069, 582936, 680092, 728670, 850115, 971560, 1020138, 1360184, 1457340, 1700230, 2040276, 2550345, 2914680, 3400460, 4080552, 5100690, 6800920, 10201380, 20402760]

約数ペア:

[(1, 20402760), (2, 10201380), (3, 6800920), (4, 5100690), (5, 4080552), (6, 3400460), (7, 2914680), (8, 2550345), (10, 2040276), (12, 1700230), (14, 1457340), (15, 1360184), (20, 1020138), (21, 971560), (24, 850115), (28, 728670), (30, 680092), (35, 582936), (40, 510069), (42, 485780), (56, 364335), (60, 340046), (70, 291468), (84, 242890), (105, 194312), (107, 190680), (120, 170023), (140, 145734), (168, 121445), (210, 97156), (214, 95340), (227, 89880), (280, 72867), (321, 63560), (420, 48578), (428, 47670), (454, 44940), (535, 38136), (642, 31780), (681, 29960), (749, 27240), (840, 24289), (856, 23835), (908, 22470), (1070, 19068), (1135, 17976), (1284, 15890), (1362, 14980), (1498, 13620), (1589, 12840), (1605, 12712), (1816, 11235), (2140, 9534), (2247, 9080), (2270, 8988), (2568, 7945), (2724, 7490), (2996, 6810), (3178, 6420), (3210, 6356), (3405, 5992), (3745, 5448), (4280, 4767), (4494, 4540)]