72217959

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 108117504

約数和(自身を除く): 35899545

約数列:

[1, 3, 11, 33, 53, 157, 159, 263, 471, 583, 789, 1727, 1749, 2893, 5181, 8321, 8679, 13939, 24963, 41291, 41817, 91531, 123873, 153329, 274593, 454201, 459987, 1362603, 2188423, 6565269, 24072653, 72217959]

約数ペア:

[(1, 72217959), (3, 24072653), (11, 6565269), (33, 2188423), (53, 1362603), (157, 459987), (159, 454201), (263, 274593), (471, 153329), (583, 123873), (789, 91531), (1727, 41817), (1749, 41291), (2893, 24963), (5181, 13939), (8321, 8679)]