20719918

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:352

約数の個数: 32

約数和(自身を含む): 34583040

約数和(自身を除く): 13863122

約数列:

[1, 2, 19, 23, 38, 46, 151, 157, 302, 314, 437, 874, 2869, 2983, 3473, 3611, 5738, 5966, 6946, 7222, 23707, 47414, 65987, 68609, 131974, 137218, 450433, 545261, 900866, 1090522, 10359959, 20719918]

約数ペア:

[(1, 20719918), (2, 10359959), (19, 1090522), (23, 900866), (38, 545261), (46, 450433), (151, 137218), (157, 131974), (302, 68609), (314, 65987), (437, 47414), (874, 23707), (2869, 7222), (2983, 6946), (3473, 5966), (3611, 5738)]