64295380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{881}}^1$

素因数の和:1020

約数の個数: 48

約数和(自身を含む): 140026320

約数和(自身を除く): 75730940

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 164, 178, 205, 356, 410, 445, 820, 881, 890, 1762, 1780, 3524, 3649, 4405, 7298, 8810, 14596, 17620, 18245, 36121, 36490, 72242, 72980, 78409, 144484, 156818, 180605, 313636, 361210, 392045, 722420, 784090, 1568180, 3214769, 6429538, 12859076, 16073845, 32147690, 64295380]

約数ペア:

[(1, 64295380), (2, 32147690), (4, 16073845), (5, 12859076), (10, 6429538), (20, 3214769), (41, 1568180), (82, 784090), (89, 722420), (164, 392045), (178, 361210), (205, 313636), (356, 180605), (410, 156818), (445, 144484), (820, 78409), (881, 72980), (890, 72242), (1762, 36490), (1780, 36121), (3524, 18245), (3649, 17620), (4405, 14596), (7298, 8810)]