20025225

素因数分解:

$3^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:93

約数の個数: 120

約数和(自身を含む): 43211520

約数和(自身を除く): 23186295

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 29, 31, 33, 45, 55, 75, 81, 87, 93, 99, 135, 145, 155, 165, 225, 261, 275, 279, 297, 319, 341, 405, 435, 465, 495, 675, 725, 775, 783, 825, 837, 891, 899, 957, 1023, 1305, 1395, 1485, 1595, 1705, 2025, 2175, 2325, 2349, 2475, 2511, 2697, 2871, 3069, 3915, 4185, 4455, 4495, 4785, 5115, 6525, 6975, 7425, 7975, 8091, 8525, 8613, 9207, 9889, 11745, 12555, 13485, 14355, 15345, 19575, 20925, 22275, 22475, 23925, 24273, 25575, 25839, 27621, 29667, 40455, 43065, 46035, 49445, 58725, 62775, 67425, 71775, 72819, 76725, 89001, 121365, 129195, 138105, 148335, 202275, 215325, 230175, 247225, 267003, 364095, 445005, 606825, 645975, 690525, 741675, 801009, 1335015, 1820475, 2225025, 4005045, 6675075, 20025225]

約数ペア:

[(1, 20025225), (3, 6675075), (5, 4005045), (9, 2225025), (11, 1820475), (15, 1335015), (25, 801009), (27, 741675), (29, 690525), (31, 645975), (33, 606825), (45, 445005), (55, 364095), (75, 267003), (81, 247225), (87, 230175), (93, 215325), (99, 202275), (135, 148335), (145, 138105), (155, 129195), (165, 121365), (225, 89001), (261, 76725), (275, 72819), (279, 71775), (297, 67425), (319, 62775), (341, 58725), (405, 49445), (435, 46035), (465, 43065), (495, 40455), (675, 29667), (725, 27621), (775, 25839), (783, 25575), (825, 24273), (837, 23925), (891, 22475), (899, 22275), (957, 20925), (1023, 19575), (1305, 15345), (1395, 14355), (1485, 13485), (1595, 12555), (1705, 11745), (2025, 9889), (2175, 9207), (2325, 8613), (2349, 8525), (2475, 8091), (2511, 7975), (2697, 7425), (2871, 6975), (3069, 6525), (3915, 5115), (4185, 4785), (4455, 4495)]