18961215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{479}}^1$

素因数の和:536

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 19745985

約数列:

[1, 3, 5, 7, 13, 15, 21, 29, 35, 39, 65, 87, 91, 105, 145, 195, 203, 273, 377, 435, 455, 479, 609, 1015, 1131, 1365, 1437, 1885, 2395, 2639, 3045, 3353, 5655, 6227, 7185, 7917, 10059, 13195, 13891, 16765, 18681, 31135, 39585, 41673, 43589, 50295, 69455, 93405, 97237, 130767, 180583, 208365, 217945, 291711, 486185, 541749, 653835, 902915, 1264081, 1458555, 2708745, 3792243, 6320405, 18961215]

約数ペア:

[(1, 18961215), (3, 6320405), (5, 3792243), (7, 2708745), (13, 1458555), (15, 1264081), (21, 902915), (29, 653835), (35, 541749), (39, 486185), (65, 291711), (87, 217945), (91, 208365), (105, 180583), (145, 130767), (195, 97237), (203, 93405), (273, 69455), (377, 50295), (435, 43589), (455, 41673), (479, 39585), (609, 31135), (1015, 18681), (1131, 16765), (1365, 13891), (1437, 13195), (1885, 10059), (2395, 7917), (2639, 7185), (3045, 6227), (3353, 5655)]