19839820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1$

素因数の和:1031

約数の個数: 96

約数和(自身を含む): 55996416

約数和(自身を除く): 36156596

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 77, 91, 110, 130, 140, 143, 154, 182, 220, 260, 286, 308, 364, 385, 455, 572, 715, 770, 910, 991, 1001, 1430, 1540, 1820, 1982, 2002, 2860, 3964, 4004, 4955, 5005, 6937, 9910, 10010, 10901, 12883, 13874, 19820, 20020, 21802, 25766, 27748, 34685, 43604, 51532, 54505, 64415, 69370, 76307, 90181, 109010, 128830, 138740, 141713, 152614, 180362, 218020, 257660, 283426, 305228, 360724, 381535, 450905, 566852, 708565, 763070, 901810, 991991, 1417130, 1526140, 1803620, 1983982, 2834260, 3967964, 4959955, 9919910, 19839820]

約数ペア:

[(1, 19839820), (2, 9919910), (4, 4959955), (5, 3967964), (7, 2834260), (10, 1983982), (11, 1803620), (13, 1526140), (14, 1417130), (20, 991991), (22, 901810), (26, 763070), (28, 708565), (35, 566852), (44, 450905), (52, 381535), (55, 360724), (65, 305228), (70, 283426), (77, 257660), (91, 218020), (110, 180362), (130, 152614), (140, 141713), (143, 138740), (154, 128830), (182, 109010), (220, 90181), (260, 76307), (286, 69370), (308, 64415), (364, 54505), (385, 51532), (455, 43604), (572, 34685), (715, 27748), (770, 25766), (910, 21802), (991, 20020), (1001, 19820), (1430, 13874), (1540, 12883), (1820, 10901), (1982, 10010), (2002, 9910), (2860, 6937), (3964, 5005), (4004, 4955)]