20917404

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{577}}^1$

素因数の和:659

約数の個数: 72

約数和(自身を含む): 56805840

約数和(自身を除く): 35888436

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 53, 57, 76, 106, 114, 159, 171, 212, 228, 318, 342, 477, 577, 636, 684, 954, 1007, 1154, 1731, 1908, 2014, 2308, 3021, 3462, 4028, 5193, 6042, 6924, 9063, 10386, 10963, 12084, 18126, 20772, 21926, 30581, 32889, 36252, 43852, 61162, 65778, 91743, 98667, 122324, 131556, 183486, 197334, 275229, 366972, 394668, 550458, 581039, 1100916, 1162078, 1743117, 2324156, 3486234, 5229351, 6972468, 10458702, 20917404]

約数ペア:

[(1, 20917404), (2, 10458702), (3, 6972468), (4, 5229351), (6, 3486234), (9, 2324156), (12, 1743117), (18, 1162078), (19, 1100916), (36, 581039), (38, 550458), (53, 394668), (57, 366972), (76, 275229), (106, 197334), (114, 183486), (159, 131556), (171, 122324), (212, 98667), (228, 91743), (318, 65778), (342, 61162), (477, 43852), (577, 36252), (636, 32889), (684, 30581), (954, 21926), (1007, 20772), (1154, 18126), (1731, 12084), (1908, 10963), (2014, 10386), (2308, 9063), (3021, 6924), (3462, 6042), (4028, 5193)]