19078930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 40007520

約数和(自身を除く): 20928590

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 89, 97, 130, 170, 178, 194, 221, 442, 445, 485, 890, 970, 1105, 1157, 1261, 1513, 1649, 2210, 2314, 2522, 3026, 3298, 5785, 6305, 7565, 8245, 8633, 11570, 12610, 15130, 16490, 17266, 19669, 21437, 39338, 42874, 43165, 86330, 98345, 107185, 112229, 146761, 196690, 214370, 224458, 293522, 561145, 733805, 1122290, 1467610, 1907893, 3815786, 9539465, 19078930]

約数ペア:

[(1, 19078930), (2, 9539465), (5, 3815786), (10, 1907893), (13, 1467610), (17, 1122290), (26, 733805), (34, 561145), (65, 293522), (85, 224458), (89, 214370), (97, 196690), (130, 146761), (170, 112229), (178, 107185), (194, 98345), (221, 86330), (442, 43165), (445, 42874), (485, 39338), (890, 21437), (970, 19669), (1105, 17266), (1157, 16490), (1261, 15130), (1513, 12610), (1649, 11570), (2210, 8633), (2314, 8245), (2522, 7565), (3026, 6305), (3298, 5785)]