20509300521

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{47837}}^1$

素因数の和:47995

約数の個数: 40

約数和(自身を含む): 31488885120

約数和(自身を除く): 10979584599

約数列:

[1, 3, 9, 27, 67, 79, 81, 201, 237, 603, 711, 1809, 2133, 5293, 5427, 6399, 15879, 47637, 47837, 142911, 143511, 428733, 430533, 1291599, 3205079, 3779123, 3874797, 9615237, 11337369, 28845711, 34012107, 86537133, 102036321, 253201241, 259611399, 306108963, 759603723, 2278811169, 6836433507, 20509300521]

約数ペア:

[(1, 20509300521), (3, 6836433507), (9, 2278811169), (27, 759603723), (67, 306108963), (79, 259611399), (81, 253201241), (201, 102036321), (237, 86537133), (603, 34012107), (711, 28845711), (1809, 11337369), (2133, 9615237), (5293, 3874797), (5427, 3779123), (6399, 3205079), (15879, 1291599), (47637, 430533), (47837, 428733), (142911, 143511)]