21759675

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 43425792

約数和(自身を除く): 21666117

約数列:

[1, 3, 5, 7, 15, 21, 25, 31, 35, 49, 75, 93, 105, 147, 155, 175, 191, 217, 245, 465, 525, 573, 651, 735, 775, 955, 1085, 1225, 1337, 1519, 2325, 2865, 3255, 3675, 4011, 4557, 4775, 5425, 5921, 6685, 7595, 9359, 14325, 16275, 17763, 20055, 22785, 28077, 29605, 33425, 37975, 41447, 46795, 88815, 100275, 113925, 124341, 140385, 148025, 207235, 233975, 290129, 444075, 621705, 701925, 870387, 1036175, 1450645, 3108525, 4351935, 7253225, 21759675]

約数ペア:

[(1, 21759675), (3, 7253225), (5, 4351935), (7, 3108525), (15, 1450645), (21, 1036175), (25, 870387), (31, 701925), (35, 621705), (49, 444075), (75, 290129), (93, 233975), (105, 207235), (147, 148025), (155, 140385), (175, 124341), (191, 113925), (217, 100275), (245, 88815), (465, 46795), (525, 41447), (573, 37975), (651, 33425), (735, 29605), (775, 28077), (955, 22785), (1085, 20055), (1225, 17763), (1337, 16275), (1519, 14325), (2325, 9359), (2865, 7595), (3255, 6685), (3675, 5921), (4011, 5425), (4557, 4775)]