99930980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1811}}^1$

素因数の和:1940

約数の個数: 48

約数和(自身を含む): 219179520

約数和(自身を除く): 119248540

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1780, 1811, 2759, 3622, 5518, 7244, 9055, 11036, 13795, 18110, 27590, 36220, 55180, 56141, 112282, 161179, 224564, 280705, 322358, 561410, 644716, 805895, 1122820, 1611790, 3223580, 4996549, 9993098, 19986196, 24982745, 49965490, 99930980]

約数ペア:

[(1, 99930980), (2, 49965490), (4, 24982745), (5, 19986196), (10, 9993098), (20, 4996549), (31, 3223580), (62, 1611790), (89, 1122820), (124, 805895), (155, 644716), (178, 561410), (310, 322358), (356, 280705), (445, 224564), (620, 161179), (890, 112282), (1780, 56141), (1811, 55180), (2759, 36220), (3622, 27590), (5518, 18110), (7244, 13795), (9055, 11036)]