20520675

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:170

約数の個数: 96

約数和(自身を含む): 44520960

約数和(自身を除く): 24000285

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 43, 45, 63, 75, 101, 105, 129, 135, 175, 189, 215, 225, 301, 303, 315, 387, 505, 525, 645, 675, 707, 903, 909, 945, 1075, 1161, 1505, 1515, 1575, 1935, 2121, 2525, 2709, 2727, 3225, 3535, 4343, 4515, 4545, 4725, 5805, 6363, 7525, 7575, 8127, 9675, 10605, 13029, 13545, 13635, 17675, 19089, 21715, 22575, 22725, 29025, 30401, 31815, 39087, 40635, 53025, 65145, 67725, 68175, 91203, 95445, 108575, 117261, 152005, 159075, 195435, 203175, 273609, 325725, 456015, 477225, 586305, 760025, 820827, 977175, 1368045, 2280075, 2931525, 4104135, 6840225, 20520675]

約数ペア:

[(1, 20520675), (3, 6840225), (5, 4104135), (7, 2931525), (9, 2280075), (15, 1368045), (21, 977175), (25, 820827), (27, 760025), (35, 586305), (43, 477225), (45, 456015), (63, 325725), (75, 273609), (101, 203175), (105, 195435), (129, 159075), (135, 152005), (175, 117261), (189, 108575), (215, 95445), (225, 91203), (301, 68175), (303, 67725), (315, 65145), (387, 53025), (505, 40635), (525, 39087), (645, 31815), (675, 30401), (707, 29025), (903, 22725), (909, 22575), (945, 21715), (1075, 19089), (1161, 17675), (1505, 13635), (1515, 13545), (1575, 13029), (1935, 10605), (2121, 9675), (2525, 8127), (2709, 7575), (2727, 7525), (3225, 6363), (3535, 5805), (4343, 4725), (4515, 4545)]