21915520

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^2\times {\mathrm{283}}^1$

素因数の和:324

約数の個数: 96

約数和(自身を含む): 57791160

約数和(自身を除く): 35875640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 128, 160, 176, 220, 242, 283, 320, 352, 440, 484, 566, 605, 640, 704, 880, 968, 1132, 1210, 1408, 1415, 1760, 1936, 2264, 2420, 2830, 3113, 3520, 3872, 4528, 4840, 5660, 6226, 7040, 7744, 9056, 9680, 11320, 12452, 15488, 15565, 18112, 19360, 22640, 24904, 31130, 34243, 36224, 38720, 45280, 49808, 62260, 68486, 77440, 90560, 99616, 124520, 136972, 171215, 181120, 199232, 249040, 273944, 342430, 398464, 498080, 547888, 684860, 996160, 1095776, 1369720, 1992320, 2191552, 2739440, 4383104, 5478880, 10957760, 21915520]

約数ペア:

[(1, 21915520), (2, 10957760), (4, 5478880), (5, 4383104), (8, 2739440), (10, 2191552), (11, 1992320), (16, 1369720), (20, 1095776), (22, 996160), (32, 684860), (40, 547888), (44, 498080), (55, 398464), (64, 342430), (80, 273944), (88, 249040), (110, 199232), (121, 181120), (128, 171215), (160, 136972), (176, 124520), (220, 99616), (242, 90560), (283, 77440), (320, 68486), (352, 62260), (440, 49808), (484, 45280), (566, 38720), (605, 36224), (640, 34243), (704, 31130), (880, 24904), (968, 22640), (1132, 19360), (1210, 18112), (1408, 15565), (1415, 15488), (1760, 12452), (1936, 11320), (2264, 9680), (2420, 9056), (2830, 7744), (3113, 7040), (3520, 6226), (3872, 5660), (4528, 4840)]