890243380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:485

約数の個数: 96

約数和(自身を含む): 2054664864

約数和(自身を除く): 1164421484

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 113, 130, 157, 193, 226, 260, 314, 386, 452, 565, 628, 772, 785, 965, 1130, 1469, 1570, 1930, 2041, 2260, 2509, 2938, 3140, 3860, 4082, 5018, 5876, 7345, 8164, 10036, 10205, 12545, 14690, 17741, 20410, 21809, 25090, 29380, 30301, 35482, 40820, 43618, 50180, 60602, 70964, 87236, 88705, 109045, 121204, 151505, 177410, 218090, 230633, 283517, 303010, 354820, 393913, 436180, 461266, 567034, 606020, 787826, 922532, 1134068, 1153165, 1417585, 1575652, 1969565, 2306330, 2835170, 3424013, 3939130, 4612660, 5670340, 6848026, 7878260, 13696052, 17120065, 34240130, 44512169, 68480260, 89024338, 178048676, 222560845, 445121690, 890243380]

約数ペア:

[(1, 890243380), (2, 445121690), (4, 222560845), (5, 178048676), (10, 89024338), (13, 68480260), (20, 44512169), (26, 34240130), (52, 17120065), (65, 13696052), (113, 7878260), (130, 6848026), (157, 5670340), (193, 4612660), (226, 3939130), (260, 3424013), (314, 2835170), (386, 2306330), (452, 1969565), (565, 1575652), (628, 1417585), (772, 1153165), (785, 1134068), (965, 922532), (1130, 787826), (1469, 606020), (1570, 567034), (1930, 461266), (2041, 436180), (2260, 393913), (2509, 354820), (2938, 303010), (3140, 283517), (3860, 230633), (4082, 218090), (5018, 177410), (5876, 151505), (7345, 121204), (8164, 109045), (10036, 88705), (10205, 87236), (12545, 70964), (14690, 60602), (17741, 50180), (20410, 43618), (21809, 40820), (25090, 35482), (29380, 30301)]