20841975

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{401}}^1$

素因数の和:438

約数の個数: 96

約数和(自身を含む): 47854080

約数和(自身を除く): 27012105

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 27, 33, 35, 45, 55, 63, 75, 77, 99, 105, 135, 165, 175, 189, 225, 231, 275, 297, 315, 385, 401, 495, 525, 675, 693, 825, 945, 1155, 1203, 1485, 1575, 1925, 2005, 2079, 2475, 2807, 3465, 3609, 4411, 4725, 5775, 6015, 7425, 8421, 10025, 10395, 10827, 13233, 14035, 17325, 18045, 22055, 25263, 30075, 30877, 39699, 42105, 51975, 54135, 66165, 70175, 75789, 90225, 92631, 110275, 119097, 126315, 154385, 198495, 210525, 270675, 277893, 330825, 378945, 463155, 595485, 631575, 771925, 833679, 992475, 1389465, 1894725, 2315775, 2977425, 4168395, 6947325, 20841975]

約数ペア:

[(1, 20841975), (3, 6947325), (5, 4168395), (7, 2977425), (9, 2315775), (11, 1894725), (15, 1389465), (21, 992475), (25, 833679), (27, 771925), (33, 631575), (35, 595485), (45, 463155), (55, 378945), (63, 330825), (75, 277893), (77, 270675), (99, 210525), (105, 198495), (135, 154385), (165, 126315), (175, 119097), (189, 110275), (225, 92631), (231, 90225), (275, 75789), (297, 70175), (315, 66165), (385, 54135), (401, 51975), (495, 42105), (525, 39699), (675, 30877), (693, 30075), (825, 25263), (945, 22055), (1155, 18045), (1203, 17325), (1485, 14035), (1575, 13233), (1925, 10827), (2005, 10395), (2079, 10025), (2475, 8421), (2807, 7425), (3465, 6015), (3609, 5775), (4411, 4725)]