28638120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{331}}^1$

素因数の和:455

約数の個数: 128

約数和(自身を含む): 99440640

約数和(自身を除く): 70802520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 103, 105, 120, 140, 168, 206, 210, 280, 309, 331, 412, 420, 515, 618, 662, 721, 824, 840, 993, 1030, 1236, 1324, 1442, 1545, 1655, 1986, 2060, 2163, 2317, 2472, 2648, 2884, 3090, 3310, 3605, 3972, 4120, 4326, 4634, 4965, 5768, 6180, 6620, 6951, 7210, 7944, 8652, 9268, 9930, 10815, 11585, 12360, 13240, 13902, 14420, 17304, 18536, 19860, 21630, 23170, 27804, 28840, 34093, 34755, 39720, 43260, 46340, 55608, 68186, 69510, 86520, 92680, 102279, 136372, 139020, 170465, 204558, 238651, 272744, 278040, 340930, 409116, 477302, 511395, 681860, 715953, 818232, 954604, 1022790, 1193255, 1363720, 1431906, 1909208, 2045580, 2386510, 2863812, 3579765, 4091160, 4773020, 5727624, 7159530, 9546040, 14319060, 28638120]

約数ペア:

[(1, 28638120), (2, 14319060), (3, 9546040), (4, 7159530), (5, 5727624), (6, 4773020), (7, 4091160), (8, 3579765), (10, 2863812), (12, 2386510), (14, 2045580), (15, 1909208), (20, 1431906), (21, 1363720), (24, 1193255), (28, 1022790), (30, 954604), (35, 818232), (40, 715953), (42, 681860), (56, 511395), (60, 477302), (70, 409116), (84, 340930), (103, 278040), (105, 272744), (120, 238651), (140, 204558), (168, 170465), (206, 139020), (210, 136372), (280, 102279), (309, 92680), (331, 86520), (412, 69510), (420, 68186), (515, 55608), (618, 46340), (662, 43260), (721, 39720), (824, 34755), (840, 34093), (993, 28840), (1030, 27804), (1236, 23170), (1324, 21630), (1442, 19860), (1545, 18536), (1655, 17304), (1986, 14420), (2060, 13902), (2163, 13240), (2317, 12360), (2472, 11585), (2648, 10815), (2884, 9930), (3090, 9268), (3310, 8652), (3605, 7944), (3972, 7210), (4120, 6951), (4326, 6620), (4634, 6180), (4965, 5768)]