87776900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 198320640

約数和(自身を除く): 110543740

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 79, 82, 100, 158, 164, 205, 271, 316, 395, 410, 542, 790, 820, 1025, 1084, 1355, 1580, 1975, 2050, 2710, 3239, 3950, 4100, 5420, 6478, 6775, 7900, 11111, 12956, 13550, 16195, 21409, 22222, 27100, 32390, 42818, 44444, 55555, 64780, 80975, 85636, 107045, 111110, 161950, 214090, 222220, 277775, 323900, 428180, 535225, 555550, 877769, 1070450, 1111100, 1755538, 2140900, 3511076, 4388845, 8777690, 17555380, 21944225, 43888450, 87776900]

約数ペア:

[(1, 87776900), (2, 43888450), (4, 21944225), (5, 17555380), (10, 8777690), (20, 4388845), (25, 3511076), (41, 2140900), (50, 1755538), (79, 1111100), (82, 1070450), (100, 877769), (158, 555550), (164, 535225), (205, 428180), (271, 323900), (316, 277775), (395, 222220), (410, 214090), (542, 161950), (790, 111110), (820, 107045), (1025, 85636), (1084, 80975), (1355, 64780), (1580, 55555), (1975, 44444), (2050, 42818), (2710, 32390), (3239, 27100), (3950, 22222), (4100, 21409), (5420, 16195), (6478, 13550), (6775, 12956), (7900, 11111)]