71878140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21017}}^1$

素因数の和:21051

約数の個数: 72

約数和(自身を含む): 229516560

約数和(自身を除く): 157638420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 21017, 42034, 63051, 84068, 105085, 126102, 189153, 210170, 252204, 315255, 378306, 399323, 420340, 630510, 756612, 798646, 945765, 1197969, 1261020, 1597292, 1891530, 1996615, 2395938, 3593907, 3783060, 3993230, 4791876, 5989845, 7187814, 7986460, 11979690, 14375628, 17969535, 23959380, 35939070, 71878140]

約数ペア:

[(1, 71878140), (2, 35939070), (3, 23959380), (4, 17969535), (5, 14375628), (6, 11979690), (9, 7986460), (10, 7187814), (12, 5989845), (15, 4791876), (18, 3993230), (19, 3783060), (20, 3593907), (30, 2395938), (36, 1996615), (38, 1891530), (45, 1597292), (57, 1261020), (60, 1197969), (76, 945765), (90, 798646), (95, 756612), (114, 630510), (171, 420340), (180, 399323), (190, 378306), (228, 315255), (285, 252204), (342, 210170), (380, 189153), (570, 126102), (684, 105085), (855, 84068), (1140, 63051), (1710, 42034), (3420, 21017)]