1915920640

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{18947}}^1$

素因数の和:19047

約数の個数: 72

約数和(自身を含む): 4647565440

約数和(自身を除く): 2731644800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 632, 640, 790, 1264, 1280, 1580, 2528, 3160, 5056, 6320, 10112, 12640, 18947, 20224, 25280, 37894, 50560, 75788, 94735, 101120, 151576, 189470, 303152, 378940, 606304, 757880, 1212608, 1496813, 1515760, 2425216, 2993626, 3031520, 4850432, 5987252, 6063040, 7484065, 11974504, 12126080, 14968130, 23949008, 24252160, 29936260, 47898016, 59872520, 95796032, 119745040, 191592064, 239490080, 383184128, 478980160, 957960320, 1915920640]

約数ペア:

[(1, 1915920640), (2, 957960320), (4, 478980160), (5, 383184128), (8, 239490080), (10, 191592064), (16, 119745040), (20, 95796032), (32, 59872520), (40, 47898016), (64, 29936260), (79, 24252160), (80, 23949008), (128, 14968130), (158, 12126080), (160, 11974504), (256, 7484065), (316, 6063040), (320, 5987252), (395, 4850432), (632, 3031520), (640, 2993626), (790, 2425216), (1264, 1515760), (1280, 1496813), (1580, 1212608), (2528, 757880), (3160, 606304), (5056, 378940), (6320, 303152), (10112, 189470), (12640, 151576), (18947, 101120), (20224, 94735), (25280, 75788), (37894, 50560)]