16988920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{883}}^1$

素因数の和:944

約数の個数: 64

約数和(自身を含む): 42325920

約数和(自身を除く): 25337000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 740, 883, 962, 1480, 1766, 1924, 2405, 3532, 3848, 4415, 4810, 7064, 8830, 9620, 11479, 17660, 19240, 22958, 32671, 35320, 45916, 57395, 65342, 91832, 114790, 130684, 163355, 229580, 261368, 326710, 424723, 459160, 653420, 849446, 1306840, 1698892, 2123615, 3397784, 4247230, 8494460, 16988920]

約数ペア:

[(1, 16988920), (2, 8494460), (4, 4247230), (5, 3397784), (8, 2123615), (10, 1698892), (13, 1306840), (20, 849446), (26, 653420), (37, 459160), (40, 424723), (52, 326710), (65, 261368), (74, 229580), (104, 163355), (130, 130684), (148, 114790), (185, 91832), (260, 65342), (296, 57395), (370, 45916), (481, 35320), (520, 32671), (740, 22958), (883, 19240), (962, 17660), (1480, 11479), (1766, 9620), (1924, 8830), (2405, 7064), (3532, 4810), (3848, 4415)]