219760

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:121

約数の個数: 40

約数和(自身を含む): 531216

約数和(自身を除く): 311456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 67, 80, 82, 134, 164, 205, 268, 328, 335, 410, 536, 656, 670, 820, 1072, 1340, 1640, 2680, 2747, 3280, 5360, 5494, 10988, 13735, 21976, 27470, 43952, 54940, 109880, 219760]

約数ペア:

[(1, 219760), (2, 109880), (4, 54940), (5, 43952), (8, 27470), (10, 21976), (16, 13735), (20, 10988), (40, 5494), (41, 5360), (67, 3280), (80, 2747), (82, 2680), (134, 1640), (164, 1340), (205, 1072), (268, 820), (328, 670), (335, 656), (410, 536)]