21679840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1489}}^1$

素因数の和:1524

約数の個数: 96

約数和(自身を含む): 63080640

約数和(自身を除く): 41400800

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 364, 416, 455, 520, 560, 728, 910, 1040, 1120, 1456, 1489, 1820, 2080, 2912, 2978, 3640, 5956, 7280, 7445, 10423, 11912, 14560, 14890, 19357, 20846, 23824, 29780, 38714, 41692, 47648, 52115, 59560, 77428, 83384, 96785, 104230, 119120, 135499, 154856, 166768, 193570, 208460, 238240, 270998, 309712, 333536, 387140, 416920, 541996, 619424, 677495, 774280, 833840, 1083992, 1354990, 1548560, 1667680, 2167984, 2709980, 3097120, 4335968, 5419960, 10839920, 21679840]

約数ペア:

[(1, 21679840), (2, 10839920), (4, 5419960), (5, 4335968), (7, 3097120), (8, 2709980), (10, 2167984), (13, 1667680), (14, 1548560), (16, 1354990), (20, 1083992), (26, 833840), (28, 774280), (32, 677495), (35, 619424), (40, 541996), (52, 416920), (56, 387140), (65, 333536), (70, 309712), (80, 270998), (91, 238240), (104, 208460), (112, 193570), (130, 166768), (140, 154856), (160, 135499), (182, 119120), (208, 104230), (224, 96785), (260, 83384), (280, 77428), (364, 59560), (416, 52115), (455, 47648), (520, 41692), (560, 38714), (728, 29780), (910, 23824), (1040, 20846), (1120, 19357), (1456, 14890), (1489, 14560), (1820, 11912), (2080, 10423), (2912, 7445), (2978, 7280), (3640, 5956)]