18847660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1021}}^1$

素因数の和:1114

約数の個数: 48

約数和(自身を含む): 43267392

約数和(自身を除く): 24419732

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1021, 1420, 1846, 2042, 3692, 4084, 4615, 5105, 9230, 10210, 13273, 18460, 20420, 26546, 53092, 66365, 72491, 132730, 144982, 265460, 289964, 362455, 724910, 942383, 1449820, 1884766, 3769532, 4711915, 9423830, 18847660]

約数ペア:

[(1, 18847660), (2, 9423830), (4, 4711915), (5, 3769532), (10, 1884766), (13, 1449820), (20, 942383), (26, 724910), (52, 362455), (65, 289964), (71, 265460), (130, 144982), (142, 132730), (260, 72491), (284, 66365), (355, 53092), (710, 26546), (923, 20420), (1021, 18460), (1420, 13273), (1846, 10210), (2042, 9230), (3692, 5105), (4084, 4615)]