18655205

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 24984288

約数和(自身を除く): 6329083

約数列:

[1, 5, 17, 41, 53, 85, 101, 205, 265, 505, 697, 901, 1717, 2173, 3485, 4141, 4505, 5353, 8585, 10865, 20705, 26765, 36941, 70397, 91001, 184705, 219473, 351985, 455005, 1097365, 3731041, 18655205]

約数ペア:

[(1, 18655205), (5, 3731041), (17, 1097365), (41, 455005), (53, 351985), (85, 219473), (101, 184705), (205, 91001), (265, 70397), (505, 36941), (697, 26765), (901, 20705), (1717, 10865), (2173, 8585), (3485, 5353), (4141, 4505)]