20545070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{211}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 46158336

約数和(自身を除く): 25613266

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 107, 130, 182, 211, 214, 422, 455, 535, 749, 910, 1055, 1070, 1391, 1477, 1498, 2110, 2743, 2782, 2954, 3745, 5486, 6955, 7385, 7490, 9737, 13715, 13910, 14770, 19201, 19474, 22577, 27430, 38402, 45154, 48685, 96005, 97370, 112885, 158039, 192010, 225770, 293501, 316078, 587002, 790195, 1467505, 1580390, 2054507, 2935010, 4109014, 10272535, 20545070]

約数ペア:

[(1, 20545070), (2, 10272535), (5, 4109014), (7, 2935010), (10, 2054507), (13, 1580390), (14, 1467505), (26, 790195), (35, 587002), (65, 316078), (70, 293501), (91, 225770), (107, 192010), (130, 158039), (182, 112885), (211, 97370), (214, 96005), (422, 48685), (455, 45154), (535, 38402), (749, 27430), (910, 22577), (1055, 19474), (1070, 19201), (1391, 14770), (1477, 13910), (1498, 13715), (2110, 9737), (2743, 7490), (2782, 7385), (2954, 6955), (3745, 5486)]