21504860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{773}}^1$

素因数の和:902

約数の個数: 48

約数和(自身を含む): 49152096

約数和(自身を除く): 27647236

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 773, 1070, 1391, 1546, 2140, 2782, 3092, 3865, 5564, 6955, 7730, 10049, 13910, 15460, 20098, 27820, 40196, 50245, 82711, 100490, 165422, 200980, 330844, 413555, 827110, 1075243, 1654220, 2150486, 4300972, 5376215, 10752430, 21504860]

約数ペア:

[(1, 21504860), (2, 10752430), (4, 5376215), (5, 4300972), (10, 2150486), (13, 1654220), (20, 1075243), (26, 827110), (52, 413555), (65, 330844), (107, 200980), (130, 165422), (214, 100490), (260, 82711), (428, 50245), (535, 40196), (773, 27820), (1070, 20098), (1391, 15460), (1546, 13910), (2140, 10049), (2782, 7730), (3092, 6955), (3865, 5564)]