18784980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:870

約数の個数: 96

約数和(自身を含む): 59875200

約数和(自身を除く): 41090220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 43, 45, 54, 60, 86, 90, 108, 129, 135, 172, 180, 215, 258, 270, 387, 430, 516, 540, 645, 774, 809, 860, 1161, 1290, 1548, 1618, 1935, 2322, 2427, 2580, 3236, 3870, 4045, 4644, 4854, 5805, 7281, 7740, 8090, 9708, 11610, 12135, 14562, 16180, 21843, 23220, 24270, 29124, 34787, 36405, 43686, 48540, 69574, 72810, 87372, 104361, 109215, 139148, 145620, 173935, 208722, 218430, 313083, 347870, 417444, 436860, 521805, 626166, 695740, 939249, 1043610, 1252332, 1565415, 1878498, 2087220, 3130830, 3756996, 4696245, 6261660, 9392490, 18784980]

約数ペア:

[(1, 18784980), (2, 9392490), (3, 6261660), (4, 4696245), (5, 3756996), (6, 3130830), (9, 2087220), (10, 1878498), (12, 1565415), (15, 1252332), (18, 1043610), (20, 939249), (27, 695740), (30, 626166), (36, 521805), (43, 436860), (45, 417444), (54, 347870), (60, 313083), (86, 218430), (90, 208722), (108, 173935), (129, 145620), (135, 139148), (172, 109215), (180, 104361), (215, 87372), (258, 72810), (270, 69574), (387, 48540), (430, 43686), (516, 36405), (540, 34787), (645, 29124), (774, 24270), (809, 23220), (860, 21843), (1161, 16180), (1290, 14562), (1548, 12135), (1618, 11610), (1935, 9708), (2322, 8090), (2427, 7740), (2580, 7281), (3236, 5805), (3870, 4854), (4045, 4644)]