20098000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{773}}^1$

素因数の和:809

約数の個数: 80

約数和(自身を含む): 52402896

約数和(自身を除く): 32304896

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 200, 208, 250, 260, 325, 400, 500, 520, 650, 773, 1000, 1040, 1300, 1546, 1625, 2000, 2600, 3092, 3250, 3865, 5200, 6184, 6500, 7730, 10049, 12368, 13000, 15460, 19325, 20098, 26000, 30920, 38650, 40196, 50245, 61840, 77300, 80392, 96625, 100490, 154600, 160784, 193250, 200980, 251225, 309200, 386500, 401960, 502450, 773000, 803920, 1004900, 1256125, 1546000, 2009800, 2512250, 4019600, 5024500, 10049000, 20098000]

約数ペア:

[(1, 20098000), (2, 10049000), (4, 5024500), (5, 4019600), (8, 2512250), (10, 2009800), (13, 1546000), (16, 1256125), (20, 1004900), (25, 803920), (26, 773000), (40, 502450), (50, 401960), (52, 386500), (65, 309200), (80, 251225), (100, 200980), (104, 193250), (125, 160784), (130, 154600), (200, 100490), (208, 96625), (250, 80392), (260, 77300), (325, 61840), (400, 50245), (500, 40196), (520, 38650), (650, 30920), (773, 26000), (1000, 20098), (1040, 19325), (1300, 15460), (1546, 13000), (1625, 12368), (2000, 10049), (2600, 7730), (3092, 6500), (3250, 6184), (3865, 5200)]