18391905

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:483

約数の個数: 72

約数和(自身を含む): 39124800

約数和(自身を除く): 20732895

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 49, 57, 63, 95, 105, 133, 147, 171, 245, 285, 315, 399, 439, 441, 665, 735, 855, 931, 1197, 1317, 1995, 2195, 2205, 2793, 3073, 3951, 4655, 5985, 6585, 8341, 8379, 9219, 13965, 15365, 19755, 21511, 25023, 27657, 41705, 41895, 46095, 58387, 64533, 75069, 107555, 125115, 138285, 175161, 193599, 291935, 322665, 375345, 408709, 525483, 875805, 967995, 1226127, 2043545, 2627415, 3678381, 6130635, 18391905]

約数ペア:

[(1, 18391905), (3, 6130635), (5, 3678381), (7, 2627415), (9, 2043545), (15, 1226127), (19, 967995), (21, 875805), (35, 525483), (45, 408709), (49, 375345), (57, 322665), (63, 291935), (95, 193599), (105, 175161), (133, 138285), (147, 125115), (171, 107555), (245, 75069), (285, 64533), (315, 58387), (399, 46095), (439, 41895), (441, 41705), (665, 27657), (735, 25023), (855, 21511), (931, 19755), (1197, 15365), (1317, 13965), (1995, 9219), (2195, 8379), (2205, 8341), (2793, 6585), (3073, 5985), (3951, 4655)]