28499380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2237}}^1$

素因数の和:2273

約数の個数: 72

約数和(自身を含む): 75008808

約数和(自身を除く): 46509428

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2237, 2548, 3185, 4474, 6370, 8948, 11185, 12740, 15659, 22370, 29081, 31318, 44740, 58162, 62636, 78295, 109613, 116324, 145405, 156590, 203567, 219226, 290810, 313180, 407134, 438452, 548065, 581620, 814268, 1017835, 1096130, 1424969, 2035670, 2192260, 2849938, 4071340, 5699876, 7124845, 14249690, 28499380]

約数ペア:

[(1, 28499380), (2, 14249690), (4, 7124845), (5, 5699876), (7, 4071340), (10, 2849938), (13, 2192260), (14, 2035670), (20, 1424969), (26, 1096130), (28, 1017835), (35, 814268), (49, 581620), (52, 548065), (65, 438452), (70, 407134), (91, 313180), (98, 290810), (130, 219226), (140, 203567), (182, 156590), (196, 145405), (245, 116324), (260, 109613), (364, 78295), (455, 62636), (490, 58162), (637, 44740), (910, 31318), (980, 29081), (1274, 22370), (1820, 15659), (2237, 12740), (2548, 11185), (3185, 8948), (4474, 6370)]