31517980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{503}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 71717184

約数和(自身を除く): 40199204

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 241, 260, 482, 503, 964, 1006, 1205, 2012, 2410, 2515, 3133, 4820, 5030, 6266, 6539, 10060, 12532, 13078, 15665, 26156, 31330, 32695, 62660, 65390, 121223, 130780, 242446, 484892, 606115, 1212230, 1575899, 2424460, 3151798, 6303596, 7879495, 15758990, 31517980]

約数ペア:

[(1, 31517980), (2, 15758990), (4, 7879495), (5, 6303596), (10, 3151798), (13, 2424460), (20, 1575899), (26, 1212230), (52, 606115), (65, 484892), (130, 242446), (241, 130780), (260, 121223), (482, 65390), (503, 62660), (964, 32695), (1006, 31330), (1205, 26156), (2012, 15665), (2410, 13078), (2515, 12532), (3133, 10060), (4820, 6539), (5030, 6266)]