20749520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:133

約数の個数: 160

約数和(自身を含む): 59460480

約数和(自身を除く): 38710960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 19, 20, 22, 34, 38, 40, 44, 55, 68, 73, 76, 80, 85, 88, 95, 110, 136, 146, 152, 170, 176, 187, 190, 209, 220, 272, 292, 304, 323, 340, 365, 374, 380, 418, 440, 584, 646, 680, 730, 748, 760, 803, 836, 880, 935, 1045, 1168, 1241, 1292, 1360, 1387, 1460, 1496, 1520, 1606, 1615, 1672, 1870, 2090, 2482, 2584, 2774, 2920, 2992, 3212, 3230, 3344, 3553, 3740, 4015, 4180, 4964, 5168, 5548, 5840, 6205, 6424, 6460, 6935, 7106, 7480, 8030, 8360, 9928, 11096, 12410, 12848, 12920, 13651, 13870, 14212, 14960, 15257, 16060, 16720, 17765, 19856, 22192, 23579, 24820, 25840, 27302, 27740, 28424, 30514, 32120, 35530, 47158, 49640, 54604, 55480, 56848, 61028, 64240, 68255, 71060, 76285, 94316, 99280, 109208, 110960, 117895, 122056, 136510, 142120, 152570, 188632, 218416, 235790, 244112, 259369, 273020, 284240, 305140, 377264, 471580, 518738, 546040, 610280, 943160, 1037476, 1092080, 1220560, 1296845, 1886320, 2074952, 2593690, 4149904, 5187380, 10374760, 20749520]

約数ペア:

[(1, 20749520), (2, 10374760), (4, 5187380), (5, 4149904), (8, 2593690), (10, 2074952), (11, 1886320), (16, 1296845), (17, 1220560), (19, 1092080), (20, 1037476), (22, 943160), (34, 610280), (38, 546040), (40, 518738), (44, 471580), (55, 377264), (68, 305140), (73, 284240), (76, 273020), (80, 259369), (85, 244112), (88, 235790), (95, 218416), (110, 188632), (136, 152570), (146, 142120), (152, 136510), (170, 122056), (176, 117895), (187, 110960), (190, 109208), (209, 99280), (220, 94316), (272, 76285), (292, 71060), (304, 68255), (323, 64240), (340, 61028), (365, 56848), (374, 55480), (380, 54604), (418, 49640), (440, 47158), (584, 35530), (646, 32120), (680, 30514), (730, 28424), (748, 27740), (760, 27302), (803, 25840), (836, 24820), (880, 23579), (935, 22192), (1045, 19856), (1168, 17765), (1241, 16720), (1292, 16060), (1360, 15257), (1387, 14960), (1460, 14212), (1496, 13870), (1520, 13651), (1606, 12920), (1615, 12848), (1672, 12410), (1870, 11096), (2090, 9928), (2482, 8360), (2584, 8030), (2774, 7480), (2920, 7106), (2992, 6935), (3212, 6460), (3230, 6424), (3344, 6205), (3553, 5840), (3740, 5548), (4015, 5168), (4180, 4964)]