20656125

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:132

約数の個数: 96

約数和(自身を含む): 44259072

約数和(自身を除く): 23602947

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 43, 45, 61, 63, 75, 105, 125, 129, 175, 183, 215, 225, 301, 305, 315, 375, 387, 427, 525, 549, 645, 875, 903, 915, 1075, 1125, 1281, 1505, 1525, 1575, 1935, 2135, 2623, 2625, 2709, 2745, 3225, 3843, 4515, 4575, 5375, 6405, 7525, 7625, 7869, 7875, 9675, 10675, 13115, 13545, 13725, 16125, 18361, 19215, 22575, 22875, 23607, 32025, 37625, 39345, 48375, 53375, 55083, 65575, 67725, 68625, 91805, 96075, 112875, 118035, 160125, 165249, 196725, 275415, 327875, 338625, 459025, 480375, 590175, 826245, 983625, 1377075, 2295125, 2950875, 4131225, 6885375, 20656125]

約数ペア:

[(1, 20656125), (3, 6885375), (5, 4131225), (7, 2950875), (9, 2295125), (15, 1377075), (21, 983625), (25, 826245), (35, 590175), (43, 480375), (45, 459025), (61, 338625), (63, 327875), (75, 275415), (105, 196725), (125, 165249), (129, 160125), (175, 118035), (183, 112875), (215, 96075), (225, 91805), (301, 68625), (305, 67725), (315, 65575), (375, 55083), (387, 53375), (427, 48375), (525, 39345), (549, 37625), (645, 32025), (875, 23607), (903, 22875), (915, 22575), (1075, 19215), (1125, 18361), (1281, 16125), (1505, 13725), (1525, 13545), (1575, 13115), (1935, 10675), (2135, 9675), (2623, 7875), (2625, 7869), (2709, 7625), (2745, 7525), (3225, 6405), (3843, 5375), (4515, 4575)]