16505980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1129}}^1$

素因数の和:1198

約数の個数: 48

約数和(自身を含む): 37588320

約数和(自身を除く): 21082340

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 340, 430, 731, 860, 1129, 1462, 2258, 2924, 3655, 4516, 5645, 7310, 11290, 14620, 19193, 22580, 38386, 48547, 76772, 95965, 97094, 191930, 194188, 242735, 383860, 485470, 825299, 970940, 1650598, 3301196, 4126495, 8252990, 16505980]

約数ペア:

[(1, 16505980), (2, 8252990), (4, 4126495), (5, 3301196), (10, 1650598), (17, 970940), (20, 825299), (34, 485470), (43, 383860), (68, 242735), (85, 194188), (86, 191930), (170, 97094), (172, 95965), (215, 76772), (340, 48547), (430, 38386), (731, 22580), (860, 19193), (1129, 14620), (1462, 11290), (2258, 7310), (2924, 5645), (3655, 4516)]