20120230

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 41368320

約数和(自身を除く): 21248090

約数列:

[1, 2, 5, 10, 13, 26, 37, 47, 65, 74, 89, 94, 130, 178, 185, 235, 370, 445, 470, 481, 611, 890, 962, 1157, 1222, 1739, 2314, 2405, 3055, 3293, 3478, 4183, 4810, 5785, 6110, 6586, 8366, 8695, 11570, 16465, 17390, 20915, 22607, 32930, 41830, 42809, 45214, 54379, 85618, 108758, 113035, 154771, 214045, 226070, 271895, 309542, 428090, 543790, 773855, 1547710, 2012023, 4024046, 10060115, 20120230]

約数ペア:

[(1, 20120230), (2, 10060115), (5, 4024046), (10, 2012023), (13, 1547710), (26, 773855), (37, 543790), (47, 428090), (65, 309542), (74, 271895), (89, 226070), (94, 214045), (130, 154771), (178, 113035), (185, 108758), (235, 85618), (370, 54379), (445, 45214), (470, 42809), (481, 41830), (611, 32930), (890, 22607), (962, 20915), (1157, 17390), (1222, 16465), (1739, 11570), (2314, 8695), (2405, 8366), (3055, 6586), (3293, 6110), (3478, 5785), (4183, 4810)]