9780980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1933}}^1$

素因数の和:1976

約数の個数: 48

約数和(自身を含む): 23393664

約数和(自身を除く): 13612684

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 1933, 2530, 3866, 5060, 7732, 9665, 19330, 21263, 38660, 42526, 44459, 85052, 88918, 106315, 177836, 212630, 222295, 425260, 444590, 489049, 889180, 978098, 1956196, 2445245, 4890490, 9780980]

約数ペア:

[(1, 9780980), (2, 4890490), (4, 2445245), (5, 1956196), (10, 978098), (11, 889180), (20, 489049), (22, 444590), (23, 425260), (44, 222295), (46, 212630), (55, 177836), (92, 106315), (110, 88918), (115, 85052), (220, 44459), (230, 42526), (253, 38660), (460, 21263), (506, 19330), (1012, 9665), (1265, 7732), (1933, 5060), (2530, 3866)]