15640520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{673}}^1$

素因数の和:774

約数の個数: 64

約数和(自身を含む): 40763520

約数和(自身を除く): 25123000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 83, 140, 166, 280, 332, 415, 581, 664, 673, 830, 1162, 1346, 1660, 2324, 2692, 2905, 3320, 3365, 4648, 4711, 5384, 5810, 6730, 9422, 11620, 13460, 18844, 23240, 23555, 26920, 37688, 47110, 55859, 94220, 111718, 188440, 223436, 279295, 391013, 446872, 558590, 782026, 1117180, 1564052, 1955065, 2234360, 3128104, 3910130, 7820260, 15640520]

約数ペア:

[(1, 15640520), (2, 7820260), (4, 3910130), (5, 3128104), (7, 2234360), (8, 1955065), (10, 1564052), (14, 1117180), (20, 782026), (28, 558590), (35, 446872), (40, 391013), (56, 279295), (70, 223436), (83, 188440), (140, 111718), (166, 94220), (280, 55859), (332, 47110), (415, 37688), (581, 26920), (664, 23555), (673, 23240), (830, 18844), (1162, 13460), (1346, 11620), (1660, 9422), (2324, 6730), (2692, 5810), (2905, 5384), (3320, 4711), (3365, 4648)]