199981740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{271}}^1$

素因数の和:548

約数の個数: 144

約数和(自身を含む): 656377344

約数和(自身を除く): 456395604

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 251, 271, 294, 420, 490, 502, 542, 588, 735, 753, 813, 980, 1004, 1084, 1255, 1355, 1470, 1506, 1626, 1757, 1897, 2510, 2710, 2940, 3012, 3252, 3514, 3765, 3794, 4065, 5020, 5271, 5420, 5691, 7028, 7530, 7588, 8130, 8785, 9485, 10542, 11382, 12299, 13279, 15060, 16260, 17570, 18970, 21084, 22764, 24598, 26355, 26558, 28455, 35140, 36897, 37940, 39837, 49196, 52710, 53116, 56910, 61495, 66395, 68021, 73794, 79674, 105420, 113820, 122990, 132790, 136042, 147588, 159348, 184485, 199185, 204063, 245980, 265580, 272084, 340105, 368970, 398370, 408126, 476147, 680210, 737940, 796740, 816252, 952294, 1020315, 1360420, 1428441, 1904588, 2040630, 2380735, 2856882, 3333029, 4081260, 4761470, 5713764, 6666058, 7142205, 9522940, 9999087, 13332116, 14284410, 16665145, 19998174, 28568820, 33330290, 39996348, 49995435, 66660580, 99990870, 199981740]

約数ペア:

[(1, 199981740), (2, 99990870), (3, 66660580), (4, 49995435), (5, 39996348), (6, 33330290), (7, 28568820), (10, 19998174), (12, 16665145), (14, 14284410), (15, 13332116), (20, 9999087), (21, 9522940), (28, 7142205), (30, 6666058), (35, 5713764), (42, 4761470), (49, 4081260), (60, 3333029), (70, 2856882), (84, 2380735), (98, 2040630), (105, 1904588), (140, 1428441), (147, 1360420), (196, 1020315), (210, 952294), (245, 816252), (251, 796740), (271, 737940), (294, 680210), (420, 476147), (490, 408126), (502, 398370), (542, 368970), (588, 340105), (735, 272084), (753, 265580), (813, 245980), (980, 204063), (1004, 199185), (1084, 184485), (1255, 159348), (1355, 147588), (1470, 136042), (1506, 132790), (1626, 122990), (1757, 113820), (1897, 105420), (2510, 79674), (2710, 73794), (2940, 68021), (3012, 66395), (3252, 61495), (3514, 56910), (3765, 53116), (3794, 52710), (4065, 49196), (5020, 39837), (5271, 37940), (5420, 36897), (5691, 35140), (7028, 28455), (7530, 26558), (7588, 26355), (8130, 24598), (8785, 22764), (9485, 21084), (10542, 18970), (11382, 17570), (12299, 16260), (13279, 15060)]