20721888

素因数分解:

$2^5\times 3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:269

約数の個数: 144

約数和(自身を含む): 66673152

約数和(自身を除く): 45951264

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 31, 32, 33, 36, 44, 48, 62, 66, 72, 88, 93, 96, 99, 124, 132, 144, 176, 186, 198, 211, 248, 264, 279, 288, 341, 352, 372, 396, 422, 496, 528, 558, 633, 682, 744, 792, 844, 992, 1023, 1056, 1116, 1266, 1364, 1488, 1584, 1688, 1899, 2046, 2232, 2321, 2532, 2728, 2976, 3069, 3168, 3376, 3798, 4092, 4464, 4642, 5064, 5456, 6138, 6541, 6752, 6963, 7596, 8184, 8928, 9284, 10128, 10912, 12276, 13082, 13926, 15192, 16368, 18568, 19623, 20256, 20889, 24552, 26164, 27852, 30384, 32736, 37136, 39246, 41778, 49104, 52328, 55704, 58869, 60768, 71951, 74272, 78492, 83556, 98208, 104656, 111408, 117738, 143902, 156984, 167112, 209312, 215853, 222816, 235476, 287804, 313968, 334224, 431706, 470952, 575608, 627936, 647559, 668448, 863412, 941904, 1151216, 1295118, 1726824, 1883808, 2302432, 2590236, 3453648, 5180472, 6907296, 10360944, 20721888]

約数ペア:

[(1, 20721888), (2, 10360944), (3, 6907296), (4, 5180472), (6, 3453648), (8, 2590236), (9, 2302432), (11, 1883808), (12, 1726824), (16, 1295118), (18, 1151216), (22, 941904), (24, 863412), (31, 668448), (32, 647559), (33, 627936), (36, 575608), (44, 470952), (48, 431706), (62, 334224), (66, 313968), (72, 287804), (88, 235476), (93, 222816), (96, 215853), (99, 209312), (124, 167112), (132, 156984), (144, 143902), (176, 117738), (186, 111408), (198, 104656), (211, 98208), (248, 83556), (264, 78492), (279, 74272), (288, 71951), (341, 60768), (352, 58869), (372, 55704), (396, 52328), (422, 49104), (496, 41778), (528, 39246), (558, 37136), (633, 32736), (682, 30384), (744, 27852), (792, 26164), (844, 24552), (992, 20889), (1023, 20256), (1056, 19623), (1116, 18568), (1266, 16368), (1364, 15192), (1488, 13926), (1584, 13082), (1688, 12276), (1899, 10912), (2046, 10128), (2232, 9284), (2321, 8928), (2532, 8184), (2728, 7596), (2976, 6963), (3069, 6752), (3168, 6541), (3376, 6138), (3798, 5456), (4092, 5064), (4464, 4642)]