21680880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6949}}^1$

素因数の和:6978

約数の個数: 80

約数和(自身を含む): 72391200

約数和(自身を除く): 50710320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6949, 13898, 20847, 27796, 34745, 41694, 55592, 69490, 83388, 90337, 104235, 111184, 138980, 166776, 180674, 208470, 271011, 277960, 333552, 361348, 416940, 451685, 542022, 555920, 722696, 833880, 903370, 1084044, 1355055, 1445392, 1667760, 1806740, 2168088, 2710110, 3613480, 4336176, 5420220, 7226960, 10840440, 21680880]

約数ペア:

[(1, 21680880), (2, 10840440), (3, 7226960), (4, 5420220), (5, 4336176), (6, 3613480), (8, 2710110), (10, 2168088), (12, 1806740), (13, 1667760), (15, 1445392), (16, 1355055), (20, 1084044), (24, 903370), (26, 833880), (30, 722696), (39, 555920), (40, 542022), (48, 451685), (52, 416940), (60, 361348), (65, 333552), (78, 277960), (80, 271011), (104, 208470), (120, 180674), (130, 166776), (156, 138980), (195, 111184), (208, 104235), (240, 90337), (260, 83388), (312, 69490), (390, 55592), (520, 41694), (624, 34745), (780, 27796), (1040, 20847), (1560, 13898), (3120, 6949)]