257499990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{8969}}^1$

素因数の和:9022

約数の個数: 96

約数和(自身を含む): 755632800

約数和(自身を除く): 498132810

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 29, 30, 33, 45, 55, 58, 66, 87, 90, 99, 110, 145, 165, 174, 198, 261, 290, 319, 330, 435, 495, 522, 638, 870, 957, 990, 1305, 1595, 1914, 2610, 2871, 3190, 4785, 5742, 8969, 9570, 14355, 17938, 26907, 28710, 44845, 53814, 80721, 89690, 98659, 134535, 161442, 197318, 260101, 269070, 295977, 403605, 493295, 520202, 591954, 780303, 807210, 887931, 986590, 1300505, 1479885, 1560606, 1775862, 2340909, 2601010, 2861111, 2959770, 3901515, 4439655, 4681818, 5722222, 7803030, 8583333, 8879310, 11704545, 14305555, 17166666, 23409090, 25749999, 28611110, 42916665, 51499998, 85833330, 128749995, 257499990]

約数ペア:

[(1, 257499990), (2, 128749995), (3, 85833330), (5, 51499998), (6, 42916665), (9, 28611110), (10, 25749999), (11, 23409090), (15, 17166666), (18, 14305555), (22, 11704545), (29, 8879310), (30, 8583333), (33, 7803030), (45, 5722222), (55, 4681818), (58, 4439655), (66, 3901515), (87, 2959770), (90, 2861111), (99, 2601010), (110, 2340909), (145, 1775862), (165, 1560606), (174, 1479885), (198, 1300505), (261, 986590), (290, 887931), (319, 807210), (330, 780303), (435, 591954), (495, 520202), (522, 493295), (638, 403605), (870, 295977), (957, 269070), (990, 260101), (1305, 197318), (1595, 161442), (1914, 134535), (2610, 98659), (2871, 89690), (3190, 80721), (4785, 53814), (5742, 44845), (8969, 28710), (9570, 26907), (14355, 17938)]