20693320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{227}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 48755520

約数和(自身を除く): 28062200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 53, 86, 106, 172, 212, 215, 227, 265, 344, 424, 430, 454, 530, 860, 908, 1060, 1135, 1720, 1816, 2120, 2270, 2279, 4540, 4558, 9080, 9116, 9761, 11395, 12031, 18232, 19522, 22790, 24062, 39044, 45580, 48124, 48805, 60155, 78088, 91160, 96248, 97610, 120310, 195220, 240620, 390440, 481240, 517333, 1034666, 2069332, 2586665, 4138664, 5173330, 10346660, 20693320]

約数ペア:

[(1, 20693320), (2, 10346660), (4, 5173330), (5, 4138664), (8, 2586665), (10, 2069332), (20, 1034666), (40, 517333), (43, 481240), (53, 390440), (86, 240620), (106, 195220), (172, 120310), (212, 97610), (215, 96248), (227, 91160), (265, 78088), (344, 60155), (424, 48805), (430, 48124), (454, 45580), (530, 39044), (860, 24062), (908, 22790), (1060, 19522), (1135, 18232), (1720, 12031), (1816, 11395), (2120, 9761), (2270, 9116), (2279, 9080), (4540, 4558)]