261538720

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:414

約数の個数: 96

約数和(自身を含む): 635959296

約数和(自身を除く): 374420576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 127, 160, 211, 244, 254, 305, 422, 488, 508, 610, 635, 844, 976, 1016, 1055, 1220, 1270, 1688, 1952, 2032, 2110, 2440, 2540, 3376, 4064, 4220, 4880, 5080, 6752, 7747, 8440, 9760, 10160, 12871, 15494, 16880, 20320, 25742, 26797, 30988, 33760, 38735, 51484, 53594, 61976, 64355, 77470, 102968, 107188, 123952, 128710, 133985, 154940, 205936, 214376, 247904, 257420, 267970, 309880, 411872, 428752, 514840, 535940, 619760, 857504, 1029680, 1071880, 1239520, 1634617, 2059360, 2143760, 3269234, 4287520, 6538468, 8173085, 13076936, 16346170, 26153872, 32692340, 52307744, 65384680, 130769360, 261538720]

約数ペア:

[(1, 261538720), (2, 130769360), (4, 65384680), (5, 52307744), (8, 32692340), (10, 26153872), (16, 16346170), (20, 13076936), (32, 8173085), (40, 6538468), (61, 4287520), (80, 3269234), (122, 2143760), (127, 2059360), (160, 1634617), (211, 1239520), (244, 1071880), (254, 1029680), (305, 857504), (422, 619760), (488, 535940), (508, 514840), (610, 428752), (635, 411872), (844, 309880), (976, 267970), (1016, 257420), (1055, 247904), (1220, 214376), (1270, 205936), (1688, 154940), (1952, 133985), (2032, 128710), (2110, 123952), (2440, 107188), (2540, 102968), (3376, 77470), (4064, 64355), (4220, 61976), (4880, 53594), (5080, 51484), (6752, 38735), (7747, 33760), (8440, 30988), (9760, 26797), (10160, 25742), (12871, 20320), (15494, 16880)]