20762500

素因数分解:

$2^2\times 5^5\times {\mathrm{11}}^1\times {\mathrm{151}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 49871808

約数和(自身を除く): 29109308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 151, 220, 250, 275, 302, 500, 550, 604, 625, 755, 1100, 1250, 1375, 1510, 1661, 2500, 2750, 3020, 3125, 3322, 3775, 5500, 6250, 6644, 6875, 7550, 8305, 12500, 13750, 15100, 16610, 18875, 27500, 33220, 34375, 37750, 41525, 68750, 75500, 83050, 94375, 137500, 166100, 188750, 207625, 377500, 415250, 471875, 830500, 943750, 1038125, 1887500, 2076250, 4152500, 5190625, 10381250, 20762500]

約数ペア:

[(1, 20762500), (2, 10381250), (4, 5190625), (5, 4152500), (10, 2076250), (11, 1887500), (20, 1038125), (22, 943750), (25, 830500), (44, 471875), (50, 415250), (55, 377500), (100, 207625), (110, 188750), (125, 166100), (151, 137500), (220, 94375), (250, 83050), (275, 75500), (302, 68750), (500, 41525), (550, 37750), (604, 34375), (625, 33220), (755, 27500), (1100, 18875), (1250, 16610), (1375, 15100), (1510, 13750), (1661, 12500), (2500, 8305), (2750, 7550), (3020, 6875), (3125, 6644), (3322, 6250), (3775, 5500)]