20987718093

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{991}}^1\times {\mathrm{1531}}^1$

素因数の和:2610

約数の個数: 48

約数和(自身を含む): 32005808640

約数和(自身を除く): 11018090547

約数列:

[1, 3, 9, 29, 53, 87, 159, 261, 477, 991, 1531, 1537, 2973, 4593, 4611, 8919, 13779, 13833, 28739, 44399, 52523, 81143, 86217, 133197, 157569, 243429, 258651, 399591, 472707, 730287, 1517221, 1523167, 2353147, 4551663, 4569501, 7059441, 13654989, 13708503, 21178323, 43999409, 80412713, 131998227, 241238139, 395994681, 723714417, 2331968677, 6995906031, 20987718093]

約数ペア:

[(1, 20987718093), (3, 6995906031), (9, 2331968677), (29, 723714417), (53, 395994681), (87, 241238139), (159, 131998227), (261, 80412713), (477, 43999409), (991, 21178323), (1531, 13708503), (1537, 13654989), (2973, 7059441), (4593, 4569501), (4611, 4551663), (8919, 2353147), (13779, 1523167), (13833, 1517221), (28739, 730287), (44399, 472707), (52523, 399591), (81143, 258651), (86217, 243429), (133197, 157569)]