18876645

素因数分解:

$3^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{367}}^1$

素因数の和:511

約数の個数: 40

約数和(自身を含む): 34197504

約数和(自身を除く): 15320859

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 127, 135, 367, 381, 405, 635, 1101, 1143, 1835, 1905, 3303, 3429, 5505, 5715, 9909, 10287, 16515, 17145, 29727, 46609, 49545, 51435, 139827, 148635, 233045, 419481, 699135, 1258443, 2097405, 3775329, 6292215, 18876645]

約数ペア:

[(1, 18876645), (3, 6292215), (5, 3775329), (9, 2097405), (15, 1258443), (27, 699135), (45, 419481), (81, 233045), (127, 148635), (135, 139827), (367, 51435), (381, 49545), (405, 46609), (635, 29727), (1101, 17145), (1143, 16515), (1835, 10287), (1905, 9909), (3303, 5715), (3429, 5505)]