21368620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:287

約数の個数: 96

約数和(自身を含む): 56448000

約数和(自身を除く): 35079380

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 59, 65, 70, 91, 118, 130, 140, 182, 199, 236, 260, 295, 364, 398, 413, 455, 590, 767, 796, 826, 910, 995, 1180, 1393, 1534, 1652, 1820, 1990, 2065, 2587, 2786, 3068, 3835, 3980, 4130, 5174, 5369, 5572, 6965, 7670, 8260, 10348, 10738, 11741, 12935, 13930, 15340, 18109, 21476, 23482, 25870, 26845, 27860, 36218, 46964, 51740, 53690, 58705, 72436, 82187, 90545, 107380, 117410, 152633, 164374, 181090, 234820, 305266, 328748, 362180, 410935, 610532, 763165, 821870, 1068431, 1526330, 1643740, 2136862, 3052660, 4273724, 5342155, 10684310, 21368620]

約数ペア:

[(1, 21368620), (2, 10684310), (4, 5342155), (5, 4273724), (7, 3052660), (10, 2136862), (13, 1643740), (14, 1526330), (20, 1068431), (26, 821870), (28, 763165), (35, 610532), (52, 410935), (59, 362180), (65, 328748), (70, 305266), (91, 234820), (118, 181090), (130, 164374), (140, 152633), (182, 117410), (199, 107380), (236, 90545), (260, 82187), (295, 72436), (364, 58705), (398, 53690), (413, 51740), (455, 46964), (590, 36218), (767, 27860), (796, 26845), (826, 25870), (910, 23482), (995, 21476), (1180, 18109), (1393, 15340), (1534, 13930), (1652, 12935), (1820, 11741), (1990, 10738), (2065, 10348), (2587, 8260), (2786, 7670), (3068, 6965), (3835, 5572), (3980, 5369), (4130, 5174)]