21525240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{709}}^1$

素因数の和:757

約数の個数: 128

約数和(自身を含む): 73612800

約数和(自身を除く): 52087560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 23, 24, 30, 33, 40, 44, 46, 55, 60, 66, 69, 88, 92, 110, 115, 120, 132, 138, 165, 184, 220, 230, 253, 264, 276, 330, 345, 440, 460, 506, 552, 660, 690, 709, 759, 920, 1012, 1265, 1320, 1380, 1418, 1518, 2024, 2127, 2530, 2760, 2836, 3036, 3545, 3795, 4254, 5060, 5672, 6072, 7090, 7590, 7799, 8508, 10120, 10635, 14180, 15180, 15598, 16307, 17016, 21270, 23397, 28360, 30360, 31196, 32614, 38995, 42540, 46794, 48921, 62392, 65228, 77990, 81535, 85080, 93588, 97842, 116985, 130456, 155980, 163070, 179377, 187176, 195684, 233970, 244605, 311960, 326140, 358754, 391368, 467940, 489210, 538131, 652280, 717508, 896885, 935880, 978420, 1076262, 1435016, 1793770, 1956840, 2152524, 2690655, 3587540, 4305048, 5381310, 7175080, 10762620, 21525240]

約数ペア:

[(1, 21525240), (2, 10762620), (3, 7175080), (4, 5381310), (5, 4305048), (6, 3587540), (8, 2690655), (10, 2152524), (11, 1956840), (12, 1793770), (15, 1435016), (20, 1076262), (22, 978420), (23, 935880), (24, 896885), (30, 717508), (33, 652280), (40, 538131), (44, 489210), (46, 467940), (55, 391368), (60, 358754), (66, 326140), (69, 311960), (88, 244605), (92, 233970), (110, 195684), (115, 187176), (120, 179377), (132, 163070), (138, 155980), (165, 130456), (184, 116985), (220, 97842), (230, 93588), (253, 85080), (264, 81535), (276, 77990), (330, 65228), (345, 62392), (440, 48921), (460, 46794), (506, 42540), (552, 38995), (660, 32614), (690, 31196), (709, 30360), (759, 28360), (920, 23397), (1012, 21270), (1265, 17016), (1320, 16307), (1380, 15598), (1418, 15180), (1518, 14180), (2024, 10635), (2127, 10120), (2530, 8508), (2760, 7799), (2836, 7590), (3036, 7090), (3545, 6072), (3795, 5672), (4254, 5060)]