20198805

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:434

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 19199595

約数列:

[1, 3, 5, 11, 15, 17, 19, 33, 51, 55, 57, 85, 95, 165, 187, 209, 255, 285, 323, 379, 561, 627, 935, 969, 1045, 1137, 1615, 1895, 2805, 3135, 3553, 4169, 4845, 5685, 6443, 7201, 10659, 12507, 17765, 19329, 20845, 21603, 32215, 36005, 53295, 62535, 70873, 79211, 96645, 108015, 122417, 212619, 237633, 354365, 367251, 396055, 612085, 1063095, 1188165, 1346587, 1836255, 4039761, 6732935, 20198805]

約数ペア:

[(1, 20198805), (3, 6732935), (5, 4039761), (11, 1836255), (15, 1346587), (17, 1188165), (19, 1063095), (33, 612085), (51, 396055), (55, 367251), (57, 354365), (85, 237633), (95, 212619), (165, 122417), (187, 108015), (209, 96645), (255, 79211), (285, 70873), (323, 62535), (379, 53295), (561, 36005), (627, 32215), (935, 21603), (969, 20845), (1045, 19329), (1137, 17765), (1615, 12507), (1895, 10659), (2805, 7201), (3135, 6443), (3553, 5685), (4169, 4845)]