28722771

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 54632448

約数和(自身を除く): 25909677

約数列:

[1, 3, 7, 9, 11, 21, 31, 33, 49, 63, 77, 93, 99, 147, 191, 217, 231, 279, 341, 441, 539, 573, 651, 693, 1023, 1337, 1519, 1617, 1719, 1953, 2101, 2387, 3069, 4011, 4557, 4851, 5921, 6303, 7161, 9359, 12033, 13671, 14707, 16709, 17763, 18909, 21483, 28077, 41447, 44121, 50127, 53289, 65131, 84231, 102949, 124341, 132363, 150381, 195393, 290129, 308847, 373023, 455917, 586179, 870387, 926541, 1367751, 2611161, 3191419, 4103253, 9574257, 28722771]

約数ペア:

[(1, 28722771), (3, 9574257), (7, 4103253), (9, 3191419), (11, 2611161), (21, 1367751), (31, 926541), (33, 870387), (49, 586179), (63, 455917), (77, 373023), (93, 308847), (99, 290129), (147, 195393), (191, 150381), (217, 132363), (231, 124341), (279, 102949), (341, 84231), (441, 65131), (539, 53289), (573, 50127), (651, 44121), (693, 41447), (1023, 28077), (1337, 21483), (1519, 18909), (1617, 17763), (1719, 16709), (1953, 14707), (2101, 13671), (2387, 12033), (3069, 9359), (4011, 7161), (4557, 6303), (4851, 5921)]