21329256

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{499}}^1$

素因数の和:658

約数の個数: 64

約数和(自身を含む): 57960000

約数和(自身を除く): 36630744

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 137, 156, 274, 312, 411, 499, 548, 822, 998, 1096, 1497, 1644, 1781, 1996, 2994, 3288, 3562, 3992, 5343, 5988, 6487, 7124, 10686, 11976, 12974, 14248, 19461, 21372, 25948, 38922, 42744, 51896, 68363, 77844, 136726, 155688, 205089, 273452, 410178, 546904, 820356, 888719, 1640712, 1777438, 2666157, 3554876, 5332314, 7109752, 10664628, 21329256]

約数ペア:

[(1, 21329256), (2, 10664628), (3, 7109752), (4, 5332314), (6, 3554876), (8, 2666157), (12, 1777438), (13, 1640712), (24, 888719), (26, 820356), (39, 546904), (52, 410178), (78, 273452), (104, 205089), (137, 155688), (156, 136726), (274, 77844), (312, 68363), (411, 51896), (499, 42744), (548, 38922), (822, 25948), (998, 21372), (1096, 19461), (1497, 14248), (1644, 12974), (1781, 11976), (1996, 10686), (2994, 7124), (3288, 6487), (3562, 5988), (3992, 5343)]