51340040

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:522

約数の個数: 64

約数和(自身を含む): 119925360

約数和(自身を除く): 68585320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 61, 106, 122, 212, 244, 265, 305, 397, 424, 488, 530, 610, 794, 1060, 1220, 1588, 1985, 2120, 2440, 3176, 3233, 3970, 6466, 7940, 12932, 15880, 16165, 21041, 24217, 25864, 32330, 42082, 48434, 64660, 84164, 96868, 105205, 121085, 129320, 168328, 193736, 210410, 242170, 420820, 484340, 841640, 968680, 1283501, 2567002, 5134004, 6417505, 10268008, 12835010, 25670020, 51340040]

約数ペア:

[(1, 51340040), (2, 25670020), (4, 12835010), (5, 10268008), (8, 6417505), (10, 5134004), (20, 2567002), (40, 1283501), (53, 968680), (61, 841640), (106, 484340), (122, 420820), (212, 242170), (244, 210410), (265, 193736), (305, 168328), (397, 129320), (424, 121085), (488, 105205), (530, 96868), (610, 84164), (794, 64660), (1060, 48434), (1220, 42082), (1588, 32330), (1985, 25864), (2120, 24217), (2440, 21041), (3176, 16165), (3233, 15880), (3970, 12932), (6466, 7940)]