21019340

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{379}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 24945460

約数列:

[1, 2, 4, 5, 10, 20, 47, 59, 94, 118, 188, 235, 236, 295, 379, 470, 590, 758, 940, 1180, 1516, 1895, 2773, 3790, 5546, 7580, 11092, 13865, 17813, 22361, 27730, 35626, 44722, 55460, 71252, 89065, 89444, 111805, 178130, 223610, 356260, 447220, 1050967, 2101934, 4203868, 5254835, 10509670, 21019340]

約数ペア:

[(1, 21019340), (2, 10509670), (4, 5254835), (5, 4203868), (10, 2101934), (20, 1050967), (47, 447220), (59, 356260), (94, 223610), (118, 178130), (188, 111805), (235, 89444), (236, 89065), (295, 71252), (379, 55460), (470, 44722), (590, 35626), (758, 27730), (940, 22361), (1180, 17813), (1516, 13865), (1895, 11092), (2773, 7580), (3790, 5546)]