21719295

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{271}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 40989312

約数和(自身を除く): 19270017

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 137, 195, 271, 411, 585, 685, 813, 1233, 1355, 1781, 2055, 2439, 3523, 4065, 5343, 6165, 8905, 10569, 12195, 16029, 17615, 26715, 31707, 37127, 52845, 80145, 111381, 158535, 185635, 334143, 482651, 556905, 1447953, 1670715, 2413255, 4343859, 7239765, 21719295]

約数ペア:

[(1, 21719295), (3, 7239765), (5, 4343859), (9, 2413255), (13, 1670715), (15, 1447953), (39, 556905), (45, 482651), (65, 334143), (117, 185635), (137, 158535), (195, 111381), (271, 80145), (411, 52845), (585, 37127), (685, 31707), (813, 26715), (1233, 17615), (1355, 16029), (1781, 12195), (2055, 10569), (2439, 8905), (3523, 6165), (4065, 5343)]