668980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 1580544

約数和(自身を除く): 911564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 83, 124, 130, 155, 166, 260, 310, 332, 403, 415, 620, 806, 830, 1079, 1612, 1660, 2015, 2158, 2573, 4030, 4316, 5146, 5395, 8060, 10292, 10790, 12865, 21580, 25730, 33449, 51460, 66898, 133796, 167245, 334490, 668980]

約数ペア:

[(1, 668980), (2, 334490), (4, 167245), (5, 133796), (10, 66898), (13, 51460), (20, 33449), (26, 25730), (31, 21580), (52, 12865), (62, 10790), (65, 10292), (83, 8060), (124, 5395), (130, 5146), (155, 4316), (166, 4030), (260, 2573), (310, 2158), (332, 2015), (403, 1660), (415, 1612), (620, 1079), (806, 830)]