31451810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 64

約数和(自身を含む): 64979712

約数和(自身を除く): 33527902

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 67, 115, 130, 134, 157, 230, 299, 314, 335, 598, 670, 785, 871, 1495, 1541, 1570, 1742, 2041, 2990, 3082, 3611, 4082, 4355, 7222, 7705, 8710, 10205, 10519, 15410, 18055, 20033, 20410, 21038, 36110, 40066, 46943, 52595, 93886, 100165, 105190, 136747, 200330, 234715, 241937, 273494, 469430, 483874, 683735, 1209685, 1367470, 2419370, 3145181, 6290362, 15725905, 31451810]

約数ペア:

[(1, 31451810), (2, 15725905), (5, 6290362), (10, 3145181), (13, 2419370), (23, 1367470), (26, 1209685), (46, 683735), (65, 483874), (67, 469430), (115, 273494), (130, 241937), (134, 234715), (157, 200330), (230, 136747), (299, 105190), (314, 100165), (335, 93886), (598, 52595), (670, 46943), (785, 40066), (871, 36110), (1495, 21038), (1541, 20410), (1570, 20033), (1742, 18055), (2041, 15410), (2990, 10519), (3082, 10205), (3611, 8710), (4082, 7705), (4355, 7222)]