20023900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:311

約数の個数: 72

約数和(自身を含む): 47660144

約数和(自身を除く): 27636244

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 73, 100, 130, 146, 211, 260, 292, 325, 365, 422, 650, 730, 844, 949, 1055, 1300, 1460, 1825, 1898, 2110, 2743, 3650, 3796, 4220, 4745, 5275, 5486, 7300, 9490, 10550, 10972, 13715, 15403, 18980, 21100, 23725, 27430, 30806, 47450, 54860, 61612, 68575, 77015, 94900, 137150, 154030, 200239, 274300, 308060, 385075, 400478, 770150, 800956, 1001195, 1540300, 2002390, 4004780, 5005975, 10011950, 20023900]

約数ペア:

[(1, 20023900), (2, 10011950), (4, 5005975), (5, 4004780), (10, 2002390), (13, 1540300), (20, 1001195), (25, 800956), (26, 770150), (50, 400478), (52, 385075), (65, 308060), (73, 274300), (100, 200239), (130, 154030), (146, 137150), (211, 94900), (260, 77015), (292, 68575), (325, 61612), (365, 54860), (422, 47450), (650, 30806), (730, 27430), (844, 23725), (949, 21100), (1055, 18980), (1300, 15403), (1460, 13715), (1825, 10972), (1898, 10550), (2110, 9490), (2743, 7300), (3650, 5486), (3796, 5275), (4220, 4745)]