28005240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:277

約数の個数: 128

約数和(自身を含む): 90201600

約数和(自身を除く): 62196360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 71, 76, 95, 114, 120, 142, 152, 173, 190, 213, 228, 284, 285, 346, 355, 380, 426, 456, 519, 568, 570, 692, 710, 760, 852, 865, 1038, 1065, 1140, 1349, 1384, 1420, 1704, 1730, 2076, 2130, 2280, 2595, 2698, 2840, 3287, 3460, 4047, 4152, 4260, 5190, 5396, 6574, 6745, 6920, 8094, 8520, 9861, 10380, 10792, 12283, 13148, 13490, 16188, 16435, 19722, 20235, 20760, 24566, 26296, 26980, 32376, 32870, 36849, 39444, 40470, 49132, 49305, 53960, 61415, 65740, 73698, 78888, 80940, 98264, 98610, 122830, 131480, 147396, 161880, 184245, 197220, 233377, 245660, 294792, 368490, 394440, 466754, 491320, 700131, 736980, 933508, 1166885, 1400262, 1473960, 1867016, 2333770, 2800524, 3500655, 4667540, 5601048, 7001310, 9335080, 14002620, 28005240]

約数ペア:

[(1, 28005240), (2, 14002620), (3, 9335080), (4, 7001310), (5, 5601048), (6, 4667540), (8, 3500655), (10, 2800524), (12, 2333770), (15, 1867016), (19, 1473960), (20, 1400262), (24, 1166885), (30, 933508), (38, 736980), (40, 700131), (57, 491320), (60, 466754), (71, 394440), (76, 368490), (95, 294792), (114, 245660), (120, 233377), (142, 197220), (152, 184245), (173, 161880), (190, 147396), (213, 131480), (228, 122830), (284, 98610), (285, 98264), (346, 80940), (355, 78888), (380, 73698), (426, 65740), (456, 61415), (519, 53960), (568, 49305), (570, 49132), (692, 40470), (710, 39444), (760, 36849), (852, 32870), (865, 32376), (1038, 26980), (1065, 26296), (1140, 24566), (1349, 20760), (1384, 20235), (1420, 19722), (1704, 16435), (1730, 16188), (2076, 13490), (2130, 13148), (2280, 12283), (2595, 10792), (2698, 10380), (2840, 9861), (3287, 8520), (3460, 8094), (4047, 6920), (4152, 6745), (4260, 6574), (5190, 5396)]