19821645

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 37497600

約数和(自身を除く): 17675955

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 61, 83, 87, 135, 145, 183, 249, 261, 305, 415, 435, 549, 747, 783, 915, 1245, 1305, 1647, 1769, 2241, 2407, 2745, 3735, 3915, 5063, 5307, 7221, 8235, 8845, 11205, 12035, 15189, 15921, 21663, 25315, 26535, 36105, 45567, 47763, 64989, 75945, 79605, 108315, 136701, 146827, 227835, 238815, 324945, 440481, 683505, 734135, 1321443, 2202405, 3964329, 6607215, 19821645]

約数ペア:

[(1, 19821645), (3, 6607215), (5, 3964329), (9, 2202405), (15, 1321443), (27, 734135), (29, 683505), (45, 440481), (61, 324945), (83, 238815), (87, 227835), (135, 146827), (145, 136701), (183, 108315), (249, 79605), (261, 75945), (305, 64989), (415, 47763), (435, 45567), (549, 36105), (747, 26535), (783, 25315), (915, 21663), (1245, 15921), (1305, 15189), (1647, 12035), (1769, 11205), (2241, 8845), (2407, 8235), (2745, 7221), (3735, 5307), (3915, 5063)]