20497485

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:162

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 16827315

約数列:

[1, 3, 5, 15, 19, 23, 53, 57, 59, 69, 95, 115, 159, 177, 265, 285, 295, 345, 437, 795, 885, 1007, 1121, 1219, 1311, 1357, 2185, 3021, 3127, 3363, 3657, 4071, 5035, 5605, 6095, 6555, 6785, 9381, 15105, 15635, 16815, 18285, 20355, 23161, 25783, 46905, 59413, 69483, 71921, 77349, 115805, 128915, 178239, 215763, 297065, 347415, 359605, 386745, 891195, 1078815, 1366499, 4099497, 6832495, 20497485]

約数ペア:

[(1, 20497485), (3, 6832495), (5, 4099497), (15, 1366499), (19, 1078815), (23, 891195), (53, 386745), (57, 359605), (59, 347415), (69, 297065), (95, 215763), (115, 178239), (159, 128915), (177, 115805), (265, 77349), (285, 71921), (295, 69483), (345, 59413), (437, 46905), (795, 25783), (885, 23161), (1007, 20355), (1121, 18285), (1219, 16815), (1311, 15635), (1357, 15105), (2185, 9381), (3021, 6785), (3127, 6555), (3363, 6095), (3657, 5605), (4071, 5035)]