28260840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:223

約数の個数: 128

約数和(自身を含む): 89579520

約数和(自身を除く): 61318680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 71, 93, 107, 120, 124, 142, 155, 186, 213, 214, 248, 284, 310, 321, 355, 372, 426, 428, 465, 535, 568, 620, 642, 710, 744, 852, 856, 930, 1065, 1070, 1240, 1284, 1420, 1605, 1704, 1860, 2130, 2140, 2201, 2568, 2840, 3210, 3317, 3720, 4260, 4280, 4402, 6420, 6603, 6634, 7597, 8520, 8804, 9951, 11005, 12840, 13206, 13268, 15194, 16585, 17608, 19902, 22010, 22791, 26412, 26536, 30388, 33015, 33170, 37985, 39804, 44020, 45582, 49755, 52824, 60776, 66030, 66340, 75970, 79608, 88040, 91164, 99510, 113955, 132060, 132680, 151940, 182328, 199020, 227910, 235507, 264120, 303880, 398040, 455820, 471014, 706521, 911640, 942028, 1177535, 1413042, 1884056, 2355070, 2826084, 3532605, 4710140, 5652168, 7065210, 9420280, 14130420, 28260840]

約数ペア:

[(1, 28260840), (2, 14130420), (3, 9420280), (4, 7065210), (5, 5652168), (6, 4710140), (8, 3532605), (10, 2826084), (12, 2355070), (15, 1884056), (20, 1413042), (24, 1177535), (30, 942028), (31, 911640), (40, 706521), (60, 471014), (62, 455820), (71, 398040), (93, 303880), (107, 264120), (120, 235507), (124, 227910), (142, 199020), (155, 182328), (186, 151940), (213, 132680), (214, 132060), (248, 113955), (284, 99510), (310, 91164), (321, 88040), (355, 79608), (372, 75970), (426, 66340), (428, 66030), (465, 60776), (535, 52824), (568, 49755), (620, 45582), (642, 44020), (710, 39804), (744, 37985), (852, 33170), (856, 33015), (930, 30388), (1065, 26536), (1070, 26412), (1240, 22791), (1284, 22010), (1420, 19902), (1605, 17608), (1704, 16585), (1860, 15194), (2130, 13268), (2140, 13206), (2201, 12840), (2568, 11005), (2840, 9951), (3210, 8804), (3317, 8520), (3720, 7597), (4260, 6634), (4280, 6603), (4402, 6420)]