21747020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{379}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 48518400

約数和(自身を除く): 26771380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 151, 190, 302, 379, 380, 604, 755, 758, 1510, 1516, 1895, 2869, 3020, 3790, 5738, 7201, 7580, 11476, 14345, 14402, 28690, 28804, 36005, 57229, 57380, 72010, 114458, 144020, 228916, 286145, 572290, 1087351, 1144580, 2174702, 4349404, 5436755, 10873510, 21747020]

約数ペア:

[(1, 21747020), (2, 10873510), (4, 5436755), (5, 4349404), (10, 2174702), (19, 1144580), (20, 1087351), (38, 572290), (76, 286145), (95, 228916), (151, 144020), (190, 114458), (302, 72010), (379, 57380), (380, 57229), (604, 36005), (755, 28804), (758, 28690), (1510, 14402), (1516, 14345), (1895, 11476), (2869, 7580), (3020, 7201), (3790, 5738)]