19341580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{349}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 43394400

約数和(自身を除く): 24052820

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 163, 170, 326, 340, 349, 652, 698, 815, 1396, 1630, 1745, 2771, 3260, 3490, 5542, 5933, 6980, 11084, 11866, 13855, 23732, 27710, 29665, 55420, 56887, 59330, 113774, 118660, 227548, 284435, 568870, 967079, 1137740, 1934158, 3868316, 4835395, 9670790, 19341580]

約数ペア:

[(1, 19341580), (2, 9670790), (4, 4835395), (5, 3868316), (10, 1934158), (17, 1137740), (20, 967079), (34, 568870), (68, 284435), (85, 227548), (163, 118660), (170, 113774), (326, 59330), (340, 56887), (349, 55420), (652, 29665), (698, 27710), (815, 23732), (1396, 13855), (1630, 11866), (1745, 11084), (2771, 6980), (3260, 5933), (3490, 5542)]