20905560

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1489}}^1$

素因数の和:1522

約数の個数: 128

約数和(自身を含む): 75096000

約数和(自身を除く): 54190440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 90, 104, 108, 117, 120, 130, 135, 156, 180, 195, 216, 234, 260, 270, 312, 351, 360, 390, 468, 520, 540, 585, 702, 780, 936, 1080, 1170, 1404, 1489, 1560, 1755, 2340, 2808, 2978, 3510, 4467, 4680, 5956, 7020, 7445, 8934, 11912, 13401, 14040, 14890, 17868, 19357, 22335, 26802, 29780, 35736, 38714, 40203, 44670, 53604, 58071, 59560, 67005, 77428, 80406, 89340, 96785, 107208, 116142, 134010, 154856, 160812, 174213, 178680, 193570, 201015, 232284, 268020, 290355, 321624, 348426, 387140, 402030, 464568, 522639, 536040, 580710, 696852, 774280, 804060, 871065, 1045278, 1161420, 1393704, 1608120, 1742130, 2090556, 2322840, 2613195, 3484260, 4181112, 5226390, 6968520, 10452780, 20905560]

約数ペア:

[(1, 20905560), (2, 10452780), (3, 6968520), (4, 5226390), (5, 4181112), (6, 3484260), (8, 2613195), (9, 2322840), (10, 2090556), (12, 1742130), (13, 1608120), (15, 1393704), (18, 1161420), (20, 1045278), (24, 871065), (26, 804060), (27, 774280), (30, 696852), (36, 580710), (39, 536040), (40, 522639), (45, 464568), (52, 402030), (54, 387140), (60, 348426), (65, 321624), (72, 290355), (78, 268020), (90, 232284), (104, 201015), (108, 193570), (117, 178680), (120, 174213), (130, 160812), (135, 154856), (156, 134010), (180, 116142), (195, 107208), (216, 96785), (234, 89340), (260, 80406), (270, 77428), (312, 67005), (351, 59560), (360, 58071), (390, 53604), (468, 44670), (520, 40203), (540, 38714), (585, 35736), (702, 29780), (780, 26802), (936, 22335), (1080, 19357), (1170, 17868), (1404, 14890), (1489, 14040), (1560, 13401), (1755, 11912), (2340, 8934), (2808, 7445), (2978, 7020), (3510, 5956), (4467, 4680)]