28663628

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 63201600

約数和(自身を除く): 34537972

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 43, 49, 76, 86, 98, 133, 172, 179, 196, 266, 301, 358, 532, 602, 716, 817, 931, 1204, 1253, 1634, 1862, 2107, 2506, 3268, 3401, 3724, 4214, 5012, 5719, 6802, 7697, 8428, 8771, 11438, 13604, 15394, 17542, 22876, 23807, 30788, 35084, 40033, 47614, 53879, 80066, 95228, 107758, 146243, 160132, 166649, 215516, 292486, 333298, 377153, 584972, 666596, 754306, 1023701, 1508612, 2047402, 4094804, 7165907, 14331814, 28663628]

約数ペア:

[(1, 28663628), (2, 14331814), (4, 7165907), (7, 4094804), (14, 2047402), (19, 1508612), (28, 1023701), (38, 754306), (43, 666596), (49, 584972), (76, 377153), (86, 333298), (98, 292486), (133, 215516), (172, 166649), (179, 160132), (196, 146243), (266, 107758), (301, 95228), (358, 80066), (532, 53879), (602, 47614), (716, 40033), (817, 35084), (931, 30788), (1204, 23807), (1253, 22876), (1634, 17542), (1862, 15394), (2107, 13604), (2506, 11438), (3268, 8771), (3401, 8428), (3724, 7697), (4214, 6802), (5012, 5719)]