18670977

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{227}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 31536960

約数和(自身を除く): 12865983

約数列:

[1, 3, 9, 13, 19, 37, 39, 57, 111, 117, 171, 227, 247, 333, 481, 681, 703, 741, 1443, 2043, 2109, 2223, 2951, 4313, 4329, 6327, 8399, 8853, 9139, 12939, 25197, 26559, 27417, 38817, 56069, 75591, 82251, 109187, 159581, 168207, 327561, 478743, 504621, 982683, 1436229, 2074553, 6223659, 18670977]

約数ペア:

[(1, 18670977), (3, 6223659), (9, 2074553), (13, 1436229), (19, 982683), (37, 504621), (39, 478743), (57, 327561), (111, 168207), (117, 159581), (171, 109187), (227, 82251), (247, 75591), (333, 56069), (481, 38817), (681, 27417), (703, 26559), (741, 25197), (1443, 12939), (2043, 9139), (2109, 8853), (2223, 8399), (2951, 6327), (4313, 4329)]