20884026320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{659}}^1\times {\mathrm{20849}}^1$

素因数の和:21540

約数の個数: 80

約数和(自身を含む): 51190920000

約数和(自身を除く): 30306893680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 659, 760, 1318, 1520, 2636, 3295, 5272, 6590, 10544, 12521, 13180, 20849, 25042, 26360, 41698, 50084, 52720, 62605, 83396, 100168, 104245, 125210, 166792, 200336, 208490, 250420, 333584, 396131, 416980, 500840, 792262, 833960, 1001680, 1584524, 1667920, 1980655, 3169048, 3961310, 6338096, 7922620, 13739491, 15845240, 27478982, 31690480, 54957964, 68697455, 109915928, 137394910, 219831856, 261050329, 274789820, 522100658, 549579640, 1044201316, 1099159280, 1305251645, 2088402632, 2610503290, 4176805264, 5221006580, 10442013160, 20884026320]

約数ペア:

[(1, 20884026320), (2, 10442013160), (4, 5221006580), (5, 4176805264), (8, 2610503290), (10, 2088402632), (16, 1305251645), (19, 1099159280), (20, 1044201316), (38, 549579640), (40, 522100658), (76, 274789820), (80, 261050329), (95, 219831856), (152, 137394910), (190, 109915928), (304, 68697455), (380, 54957964), (659, 31690480), (760, 27478982), (1318, 15845240), (1520, 13739491), (2636, 7922620), (3295, 6338096), (5272, 3961310), (6590, 3169048), (10544, 1980655), (12521, 1667920), (13180, 1584524), (20849, 1001680), (25042, 833960), (26360, 792262), (41698, 500840), (50084, 416980), (52720, 396131), (62605, 333584), (83396, 250420), (100168, 208490), (104245, 200336), (125210, 166792)]