19556900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{773}}^1$

素因数の和:821

約数の個数: 72

約数和(自身を含む): 48371904

約数和(自身を除く): 28815004

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 25, 44, 46, 50, 55, 92, 100, 110, 115, 220, 230, 253, 275, 460, 506, 550, 575, 773, 1012, 1100, 1150, 1265, 1546, 2300, 2530, 3092, 3865, 5060, 6325, 7730, 8503, 12650, 15460, 17006, 17779, 19325, 25300, 34012, 35558, 38650, 42515, 71116, 77300, 85030, 88895, 170060, 177790, 195569, 212575, 355580, 391138, 425150, 444475, 782276, 850300, 888950, 977845, 1777900, 1955690, 3911380, 4889225, 9778450, 19556900]

約数ペア:

[(1, 19556900), (2, 9778450), (4, 4889225), (5, 3911380), (10, 1955690), (11, 1777900), (20, 977845), (22, 888950), (23, 850300), (25, 782276), (44, 444475), (46, 425150), (50, 391138), (55, 355580), (92, 212575), (100, 195569), (110, 177790), (115, 170060), (220, 88895), (230, 85030), (253, 77300), (275, 71116), (460, 42515), (506, 38650), (550, 35558), (575, 34012), (773, 25300), (1012, 19325), (1100, 17779), (1150, 17006), (1265, 15460), (1546, 12650), (2300, 8503), (2530, 7730), (3092, 6325), (3865, 5060)]