20308750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1$

素因数の和:251

約数の個数: 80

約数和(自身を含む): 47684736

約数和(自身を除く): 27375986

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 125, 154, 175, 211, 250, 275, 350, 385, 422, 550, 625, 770, 875, 1055, 1250, 1375, 1477, 1750, 1925, 2110, 2321, 2750, 2954, 3850, 4375, 4642, 5275, 6875, 7385, 8750, 9625, 10550, 11605, 13750, 14770, 16247, 19250, 23210, 26375, 32494, 36925, 48125, 52750, 58025, 73850, 81235, 96250, 116050, 131875, 162470, 184625, 263750, 290125, 369250, 406175, 580250, 812350, 923125, 1450625, 1846250, 2030875, 2901250, 4061750, 10154375, 20308750]

約数ペア:

[(1, 20308750), (2, 10154375), (5, 4061750), (7, 2901250), (10, 2030875), (11, 1846250), (14, 1450625), (22, 923125), (25, 812350), (35, 580250), (50, 406175), (55, 369250), (70, 290125), (77, 263750), (110, 184625), (125, 162470), (154, 131875), (175, 116050), (211, 96250), (250, 81235), (275, 73850), (350, 58025), (385, 52750), (422, 48125), (550, 36925), (625, 32494), (770, 26375), (875, 23210), (1055, 19250), (1250, 16247), (1375, 14770), (1477, 13750), (1750, 11605), (1925, 10550), (2110, 9625), (2321, 8750), (2750, 7385), (2954, 6875), (3850, 5275), (4375, 4642)]