20534900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 47210520

約数和(自身を除く): 26675620

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 73, 97, 100, 116, 145, 146, 194, 290, 292, 365, 388, 485, 580, 725, 730, 970, 1450, 1460, 1825, 1940, 2117, 2425, 2813, 2900, 3650, 4234, 4850, 5626, 7081, 7300, 8468, 9700, 10585, 11252, 14065, 14162, 21170, 28130, 28324, 35405, 42340, 52925, 56260, 70325, 70810, 105850, 140650, 141620, 177025, 205349, 211700, 281300, 354050, 410698, 708100, 821396, 1026745, 2053490, 4106980, 5133725, 10267450, 20534900]

約数ペア:

[(1, 20534900), (2, 10267450), (4, 5133725), (5, 4106980), (10, 2053490), (20, 1026745), (25, 821396), (29, 708100), (50, 410698), (58, 354050), (73, 281300), (97, 211700), (100, 205349), (116, 177025), (145, 141620), (146, 140650), (194, 105850), (290, 70810), (292, 70325), (365, 56260), (388, 52925), (485, 42340), (580, 35405), (725, 28324), (730, 28130), (970, 21170), (1450, 14162), (1460, 14065), (1825, 11252), (1940, 10585), (2117, 9700), (2425, 8468), (2813, 7300), (2900, 7081), (3650, 5626), (4234, 4850)]