20440550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:138

約数の個数: 72

約数和(自身を含む): 42887880

約数和(自身を除く): 22447330

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 50, 59, 65, 82, 118, 130, 169, 205, 295, 325, 338, 410, 533, 590, 650, 767, 845, 1025, 1066, 1475, 1534, 1690, 2050, 2419, 2665, 2950, 3835, 4225, 4838, 5330, 6929, 7670, 8450, 9971, 12095, 13325, 13858, 19175, 19942, 24190, 26650, 31447, 34645, 38350, 49855, 60475, 62894, 69290, 99710, 120950, 157235, 173225, 249275, 314470, 346450, 408811, 498550, 786175, 817622, 1572350, 2044055, 4088110, 10220275, 20440550]

約数ペア:

[(1, 20440550), (2, 10220275), (5, 4088110), (10, 2044055), (13, 1572350), (25, 817622), (26, 786175), (41, 498550), (50, 408811), (59, 346450), (65, 314470), (82, 249275), (118, 173225), (130, 157235), (169, 120950), (205, 99710), (295, 69290), (325, 62894), (338, 60475), (410, 49855), (533, 38350), (590, 34645), (650, 31447), (767, 26650), (845, 24190), (1025, 19942), (1066, 19175), (1475, 13858), (1534, 13325), (1690, 12095), (2050, 9971), (2419, 8450), (2665, 7670), (2950, 6929), (3835, 5330), (4225, 4838)]