990400280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{733}}^1\times {\mathrm{1987}}^1$

素因数の和:2748

約数の個数: 64

約数和(自身を含む): 2363891040

約数和(自身を除く): 1373490760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 733, 1466, 1987, 2932, 3665, 3974, 5864, 7330, 7948, 9935, 12461, 14660, 15896, 19870, 24922, 29320, 33779, 39740, 49844, 62305, 67558, 79480, 99688, 124610, 135116, 168895, 249220, 270232, 337790, 498440, 675580, 1351160, 1456471, 2912942, 5825884, 7282355, 11651768, 14564710, 24760007, 29129420, 49520014, 58258840, 99040028, 123800035, 198080056, 247600070, 495200140, 990400280]

約数ペア:

[(1, 990400280), (2, 495200140), (4, 247600070), (5, 198080056), (8, 123800035), (10, 99040028), (17, 58258840), (20, 49520014), (34, 29129420), (40, 24760007), (68, 14564710), (85, 11651768), (136, 7282355), (170, 5825884), (340, 2912942), (680, 1456471), (733, 1351160), (1466, 675580), (1987, 498440), (2932, 337790), (3665, 270232), (3974, 249220), (5864, 168895), (7330, 135116), (7948, 124610), (9935, 99688), (12461, 79480), (14660, 67558), (15896, 62305), (19870, 49844), (24922, 39740), (29320, 33779)]