278617900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{13331}}^1$

素因数の和:13375

約数の個数: 72

約数和(自身を含む): 694330560

約数和(自身を除く): 415712660

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 190, 209, 220, 275, 380, 418, 475, 550, 836, 950, 1045, 1100, 1900, 2090, 4180, 5225, 10450, 13331, 20900, 26662, 53324, 66655, 133310, 146641, 253289, 266620, 293282, 333275, 506578, 586564, 666550, 733205, 1013156, 1266445, 1333100, 1466410, 2532890, 2786179, 2932820, 3666025, 5065780, 5572358, 6332225, 7332050, 11144716, 12664450, 13930895, 14664100, 25328900, 27861790, 55723580, 69654475, 139308950, 278617900]

約数ペア:

[(1, 278617900), (2, 139308950), (4, 69654475), (5, 55723580), (10, 27861790), (11, 25328900), (19, 14664100), (20, 13930895), (22, 12664450), (25, 11144716), (38, 7332050), (44, 6332225), (50, 5572358), (55, 5065780), (76, 3666025), (95, 2932820), (100, 2786179), (110, 2532890), (190, 1466410), (209, 1333100), (220, 1266445), (275, 1013156), (380, 733205), (418, 666550), (475, 586564), (550, 506578), (836, 333275), (950, 293282), (1045, 266620), (1100, 253289), (1900, 146641), (2090, 133310), (4180, 66655), (5225, 53324), (10450, 26662), (13331, 20900)]