19996725

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{929}}^1$

素因数の和:990

約数の個数: 48

約数和(自身を含む): 38747520

約数和(自身を除く): 18750795

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 41, 75, 105, 123, 175, 205, 287, 525, 615, 861, 929, 1025, 1435, 2787, 3075, 4305, 4645, 6503, 7175, 13935, 19509, 21525, 23225, 32515, 38089, 69675, 97545, 114267, 162575, 190445, 266623, 487725, 571335, 799869, 952225, 1333115, 2856675, 3999345, 6665575, 19996725]

約数ペア:

[(1, 19996725), (3, 6665575), (5, 3999345), (7, 2856675), (15, 1333115), (21, 952225), (25, 799869), (35, 571335), (41, 487725), (75, 266623), (105, 190445), (123, 162575), (175, 114267), (205, 97545), (287, 69675), (525, 38089), (615, 32515), (861, 23225), (929, 21525), (1025, 19509), (1435, 13935), (2787, 7175), (3075, 6503), (4305, 4645)]