280489120

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1021}}^1$

素因数の和:1154

約数の個数: 96

約数和(自身を含む): 709276176

約数和(自身を除く): 428787056

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 101, 136, 160, 170, 202, 272, 340, 404, 505, 544, 680, 808, 1010, 1021, 1360, 1616, 1717, 2020, 2042, 2720, 3232, 3434, 4040, 4084, 5105, 6868, 8080, 8168, 8585, 10210, 13736, 16160, 16336, 17170, 17357, 20420, 27472, 32672, 34340, 34714, 40840, 54944, 68680, 69428, 81680, 86785, 103121, 137360, 138856, 163360, 173570, 206242, 274720, 277712, 347140, 412484, 515605, 555424, 694280, 824968, 1031210, 1388560, 1649936, 1753057, 2062420, 2777120, 3299872, 3506114, 4124840, 7012228, 8249680, 8765285, 14024456, 16499360, 17530570, 28048912, 35061140, 56097824, 70122280, 140244560, 280489120]

約数ペア:

[(1, 280489120), (2, 140244560), (4, 70122280), (5, 56097824), (8, 35061140), (10, 28048912), (16, 17530570), (17, 16499360), (20, 14024456), (32, 8765285), (34, 8249680), (40, 7012228), (68, 4124840), (80, 3506114), (85, 3299872), (101, 2777120), (136, 2062420), (160, 1753057), (170, 1649936), (202, 1388560), (272, 1031210), (340, 824968), (404, 694280), (505, 555424), (544, 515605), (680, 412484), (808, 347140), (1010, 277712), (1021, 274720), (1360, 206242), (1616, 173570), (1717, 163360), (2020, 138856), (2042, 137360), (2720, 103121), (3232, 86785), (3434, 81680), (4040, 69428), (4084, 68680), (5105, 54944), (6868, 40840), (8080, 34714), (8168, 34340), (8585, 32672), (10210, 27472), (13736, 20420), (16160, 17357), (16336, 17170)]