172019440

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19727}}^1$

素因数の和:19849

約数の個数: 40

約数和(自身を含む): 403634880

約数和(自身を除く): 231615440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 19727, 39454, 78908, 98635, 157816, 197270, 315632, 394540, 789080, 1578160, 2150243, 4300486, 8600972, 10751215, 17201944, 21502430, 34403888, 43004860, 86009720, 172019440]

約数ペア:

[(1, 172019440), (2, 86009720), (4, 43004860), (5, 34403888), (8, 21502430), (10, 17201944), (16, 10751215), (20, 8600972), (40, 4300486), (80, 2150243), (109, 1578160), (218, 789080), (436, 394540), (545, 315632), (872, 197270), (1090, 157816), (1744, 98635), (2180, 78908), (4360, 39454), (8720, 19727)]