123521320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:287

約数の個数: 128

約数和(自身を含む): 322509600

約数和(自身を除く): 198988280

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 89, 104, 130, 136, 157, 170, 178, 221, 260, 314, 340, 356, 442, 445, 520, 628, 680, 712, 785, 884, 890, 1105, 1157, 1256, 1513, 1570, 1768, 1780, 2041, 2210, 2314, 2669, 3026, 3140, 3560, 4082, 4420, 4628, 5338, 5785, 6052, 6280, 7565, 8164, 8840, 9256, 10205, 10676, 11570, 12104, 13345, 13973, 15130, 16328, 19669, 20410, 21352, 23140, 26690, 27946, 30260, 34697, 39338, 40820, 46280, 53380, 55892, 60520, 69394, 69865, 78676, 81640, 98345, 106760, 111784, 138788, 139730, 157352, 173485, 181649, 196690, 237541, 277576, 279460, 346970, 363298, 393380, 475082, 558920, 693940, 726596, 786760, 908245, 950164, 1187705, 1387880, 1453192, 1816490, 1900328, 2375410, 3088033, 3632980, 4750820, 6176066, 7265960, 9501640, 12352132, 15440165, 24704264, 30880330, 61760660, 123521320]

約数ペア:

[(1, 123521320), (2, 61760660), (4, 30880330), (5, 24704264), (8, 15440165), (10, 12352132), (13, 9501640), (17, 7265960), (20, 6176066), (26, 4750820), (34, 3632980), (40, 3088033), (52, 2375410), (65, 1900328), (68, 1816490), (85, 1453192), (89, 1387880), (104, 1187705), (130, 950164), (136, 908245), (157, 786760), (170, 726596), (178, 693940), (221, 558920), (260, 475082), (314, 393380), (340, 363298), (356, 346970), (442, 279460), (445, 277576), (520, 237541), (628, 196690), (680, 181649), (712, 173485), (785, 157352), (884, 139730), (890, 138788), (1105, 111784), (1157, 106760), (1256, 98345), (1513, 81640), (1570, 78676), (1768, 69865), (1780, 69394), (2041, 60520), (2210, 55892), (2314, 53380), (2669, 46280), (3026, 40820), (3140, 39338), (3560, 34697), (4082, 30260), (4420, 27946), (4628, 26690), (5338, 23140), (5785, 21352), (6052, 20410), (6280, 19669), (7565, 16328), (8164, 15130), (8840, 13973), (9256, 13345), (10205, 12104), (10676, 11570)]