21352580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{677}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 47839680

約数和(自身を除く): 26487100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 83, 95, 166, 190, 332, 380, 415, 677, 830, 1354, 1577, 1660, 2708, 3154, 3385, 6308, 6770, 7885, 12863, 13540, 15770, 25726, 31540, 51452, 56191, 64315, 112382, 128630, 224764, 257260, 280955, 561910, 1067629, 1123820, 2135258, 4270516, 5338145, 10676290, 21352580]

約数ペア:

[(1, 21352580), (2, 10676290), (4, 5338145), (5, 4270516), (10, 2135258), (19, 1123820), (20, 1067629), (38, 561910), (76, 280955), (83, 257260), (95, 224764), (166, 128630), (190, 112382), (332, 64315), (380, 56191), (415, 51452), (677, 31540), (830, 25726), (1354, 15770), (1577, 13540), (1660, 12863), (2708, 7885), (3154, 6770), (3385, 6308)]