20178867100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{472573}}^1$

素因数の和:472655

約数の個数: 72

約数和(自身を含む): 50864084768

約数和(自身を除く): 30685217668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 61, 70, 100, 122, 140, 175, 244, 305, 350, 427, 610, 700, 854, 1220, 1525, 1708, 2135, 3050, 4270, 6100, 8540, 10675, 21350, 42700, 472573, 945146, 1890292, 2362865, 3308011, 4725730, 6616022, 9451460, 11814325, 13232044, 16540055, 23628650, 28826953, 33080110, 47257300, 57653906, 66160220, 82700275, 115307812, 144134765, 165400550, 201788671, 288269530, 330801100, 403577342, 576539060, 720673825, 807154684, 1008943355, 1441347650, 2017886710, 2882695300, 4035773420, 5044716775, 10089433550, 20178867100]

約数ペア:

[(1, 20178867100), (2, 10089433550), (4, 5044716775), (5, 4035773420), (7, 2882695300), (10, 2017886710), (14, 1441347650), (20, 1008943355), (25, 807154684), (28, 720673825), (35, 576539060), (50, 403577342), (61, 330801100), (70, 288269530), (100, 201788671), (122, 165400550), (140, 144134765), (175, 115307812), (244, 82700275), (305, 66160220), (350, 57653906), (427, 47257300), (610, 33080110), (700, 28826953), (854, 23628650), (1220, 16540055), (1525, 13232044), (1708, 11814325), (2135, 9451460), (3050, 6616022), (4270, 4725730), (6100, 3308011), (8540, 2362865), (10675, 1890292), (21350, 945146), (42700, 472573)]