20578976

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1$

素因数の和:238

約数の個数: 96

約数和(自身を含む): 49533120

約数和(自身を除く): 28954144

約数列:

[1, 2, 4, 8, 11, 16, 17, 19, 22, 32, 34, 38, 44, 68, 76, 88, 136, 152, 176, 181, 187, 209, 272, 304, 323, 352, 362, 374, 418, 544, 608, 646, 724, 748, 836, 1292, 1448, 1496, 1672, 1991, 2584, 2896, 2992, 3077, 3344, 3439, 3553, 3982, 5168, 5792, 5984, 6154, 6688, 6878, 7106, 7964, 10336, 12308, 13756, 14212, 15928, 24616, 27512, 28424, 31856, 33847, 37829, 49232, 55024, 56848, 58463, 63712, 67694, 75658, 98464, 110048, 113696, 116926, 135388, 151316, 233852, 270776, 302632, 467704, 541552, 605264, 643093, 935408, 1083104, 1210528, 1286186, 1870816, 2572372, 5144744, 10289488, 20578976]

約数ペア:

[(1, 20578976), (2, 10289488), (4, 5144744), (8, 2572372), (11, 1870816), (16, 1286186), (17, 1210528), (19, 1083104), (22, 935408), (32, 643093), (34, 605264), (38, 541552), (44, 467704), (68, 302632), (76, 270776), (88, 233852), (136, 151316), (152, 135388), (176, 116926), (181, 113696), (187, 110048), (209, 98464), (272, 75658), (304, 67694), (323, 63712), (352, 58463), (362, 56848), (374, 55024), (418, 49232), (544, 37829), (608, 33847), (646, 31856), (724, 28424), (748, 27512), (836, 24616), (1292, 15928), (1448, 14212), (1496, 13756), (1672, 12308), (1991, 10336), (2584, 7964), (2896, 7106), (2992, 6878), (3077, 6688), (3344, 6154), (3439, 5984), (3553, 5792), (3982, 5168)]