21725613

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{647}}^1$

素因数の和:714

約数の個数: 48

約数和(自身を含む): 39626496

約数和(自身を除く): 17900883

約数列:

[1, 3, 7, 9, 13, 21, 39, 41, 63, 91, 117, 123, 273, 287, 369, 533, 647, 819, 861, 1599, 1941, 2583, 3731, 4529, 4797, 5823, 8411, 11193, 13587, 25233, 26527, 33579, 40761, 58877, 75699, 79581, 176631, 185689, 238743, 344851, 529893, 557067, 1034553, 1671201, 2413957, 3103659, 7241871, 21725613]

約数ペア:

[(1, 21725613), (3, 7241871), (7, 3103659), (9, 2413957), (13, 1671201), (21, 1034553), (39, 557067), (41, 529893), (63, 344851), (91, 238743), (117, 185689), (123, 176631), (273, 79581), (287, 75699), (369, 58877), (533, 40761), (647, 33579), (819, 26527), (861, 25233), (1599, 13587), (1941, 11193), (2583, 8411), (3731, 5823), (4529, 4797)]