21890925

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:180

約数の個数: 96

約数和(自身を含む): 47496960

約数和(自身を除く): 25606035

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 41, 45, 63, 75, 105, 113, 123, 135, 175, 189, 205, 225, 287, 315, 339, 369, 525, 565, 615, 675, 791, 861, 945, 1017, 1025, 1107, 1435, 1575, 1695, 1845, 2373, 2583, 2825, 3051, 3075, 3955, 4305, 4633, 4725, 5085, 5535, 7119, 7175, 7749, 8475, 9225, 11865, 12915, 13899, 15255, 19775, 21357, 21525, 23165, 25425, 27675, 32431, 35595, 38745, 41697, 59325, 64575, 69495, 76275, 97293, 106785, 115825, 125091, 162155, 177975, 193725, 208485, 291879, 347475, 486465, 533925, 625455, 810775, 875637, 1042425, 1459395, 2432325, 3127275, 4378185, 7296975, 21890925]

約数ペア:

[(1, 21890925), (3, 7296975), (5, 4378185), (7, 3127275), (9, 2432325), (15, 1459395), (21, 1042425), (25, 875637), (27, 810775), (35, 625455), (41, 533925), (45, 486465), (63, 347475), (75, 291879), (105, 208485), (113, 193725), (123, 177975), (135, 162155), (175, 125091), (189, 115825), (205, 106785), (225, 97293), (287, 76275), (315, 69495), (339, 64575), (369, 59325), (525, 41697), (565, 38745), (615, 35595), (675, 32431), (791, 27675), (861, 25425), (945, 23165), (1017, 21525), (1025, 21357), (1107, 19775), (1435, 15255), (1575, 13899), (1695, 12915), (1845, 11865), (2373, 9225), (2583, 8475), (2825, 7749), (3051, 7175), (3075, 7119), (3955, 5535), (4305, 5085), (4633, 4725)]