199978900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{1327}}^1$

素因数の和:1489

約数の個数: 72

約数和(自身を含む): 477219456

約数和(自身を除く): 277240556

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 137, 220, 274, 275, 548, 550, 685, 1100, 1327, 1370, 1507, 2654, 2740, 3014, 3425, 5308, 6028, 6635, 6850, 7535, 13270, 13700, 14597, 15070, 26540, 29194, 30140, 33175, 37675, 58388, 66350, 72985, 75350, 132700, 145970, 150700, 181799, 291940, 363598, 364925, 727196, 729850, 908995, 1459700, 1817990, 1999789, 3635980, 3999578, 4544975, 7999156, 9089950, 9998945, 18179900, 19997890, 39995780, 49994725, 99989450, 199978900]

約数ペア:

[(1, 199978900), (2, 99989450), (4, 49994725), (5, 39995780), (10, 19997890), (11, 18179900), (20, 9998945), (22, 9089950), (25, 7999156), (44, 4544975), (50, 3999578), (55, 3635980), (100, 1999789), (110, 1817990), (137, 1459700), (220, 908995), (274, 729850), (275, 727196), (548, 364925), (550, 363598), (685, 291940), (1100, 181799), (1327, 150700), (1370, 145970), (1507, 132700), (2654, 75350), (2740, 72985), (3014, 66350), (3425, 58388), (5308, 37675), (6028, 33175), (6635, 30140), (6850, 29194), (7535, 26540), (13270, 15070), (13700, 14597)]