18228980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:142

約数の個数: 144

約数和(自身を含む): 51710400

約数和(自身を除く): 33481420

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 49, 55, 70, 76, 77, 89, 95, 98, 110, 133, 140, 154, 178, 190, 196, 209, 220, 245, 266, 308, 356, 380, 385, 418, 445, 490, 532, 539, 623, 665, 770, 836, 890, 931, 979, 980, 1045, 1078, 1246, 1330, 1463, 1540, 1691, 1780, 1862, 1958, 2090, 2156, 2492, 2660, 2695, 2926, 3115, 3382, 3724, 3916, 4180, 4361, 4655, 4895, 5390, 5852, 6230, 6764, 6853, 7315, 8455, 8722, 9310, 9790, 10241, 10780, 11837, 12460, 13706, 14630, 16910, 17444, 18601, 18620, 19580, 20482, 21805, 23674, 27412, 29260, 33820, 34265, 37202, 40964, 43610, 47348, 47971, 51205, 59185, 68530, 74404, 82859, 87220, 93005, 95942, 102410, 118370, 130207, 137060, 165718, 186010, 191884, 204820, 236740, 239855, 260414, 331436, 372020, 414295, 479710, 520828, 651035, 828590, 911449, 959420, 1302070, 1657180, 1822898, 2604140, 3645796, 4557245, 9114490, 18228980]

約数ペア:

[(1, 18228980), (2, 9114490), (4, 4557245), (5, 3645796), (7, 2604140), (10, 1822898), (11, 1657180), (14, 1302070), (19, 959420), (20, 911449), (22, 828590), (28, 651035), (35, 520828), (38, 479710), (44, 414295), (49, 372020), (55, 331436), (70, 260414), (76, 239855), (77, 236740), (89, 204820), (95, 191884), (98, 186010), (110, 165718), (133, 137060), (140, 130207), (154, 118370), (178, 102410), (190, 95942), (196, 93005), (209, 87220), (220, 82859), (245, 74404), (266, 68530), (308, 59185), (356, 51205), (380, 47971), (385, 47348), (418, 43610), (445, 40964), (490, 37202), (532, 34265), (539, 33820), (623, 29260), (665, 27412), (770, 23674), (836, 21805), (890, 20482), (931, 19580), (979, 18620), (980, 18601), (1045, 17444), (1078, 16910), (1246, 14630), (1330, 13706), (1463, 12460), (1540, 11837), (1691, 10780), (1780, 10241), (1862, 9790), (1958, 9310), (2090, 8722), (2156, 8455), (2492, 7315), (2660, 6853), (2695, 6764), (2926, 6230), (3115, 5852), (3382, 5390), (3724, 4895), (3916, 4655), (4180, 4361)]