201991980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{743}}^1$

素因数の和:975

約数の個数: 96

約数和(自身を含む): 593961984

約数和(自身を除く): 391970004

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 197, 230, 276, 345, 394, 460, 591, 690, 743, 788, 985, 1182, 1380, 1486, 1970, 2229, 2364, 2955, 2972, 3715, 3940, 4458, 4531, 5910, 7430, 8916, 9062, 11145, 11820, 13593, 14860, 17089, 18124, 22290, 22655, 27186, 34178, 44580, 45310, 51267, 54372, 67965, 68356, 85445, 90620, 102534, 135930, 146371, 170890, 205068, 256335, 271860, 292742, 341780, 439113, 512670, 585484, 731855, 878226, 1025340, 1463710, 1756452, 2195565, 2927420, 3366533, 4391130, 6733066, 8782260, 10099599, 13466132, 16832665, 20199198, 33665330, 40398396, 50497995, 67330660, 100995990, 201991980]

約数ペア:

[(1, 201991980), (2, 100995990), (3, 67330660), (4, 50497995), (5, 40398396), (6, 33665330), (10, 20199198), (12, 16832665), (15, 13466132), (20, 10099599), (23, 8782260), (30, 6733066), (46, 4391130), (60, 3366533), (69, 2927420), (92, 2195565), (115, 1756452), (138, 1463710), (197, 1025340), (230, 878226), (276, 731855), (345, 585484), (394, 512670), (460, 439113), (591, 341780), (690, 292742), (743, 271860), (788, 256335), (985, 205068), (1182, 170890), (1380, 146371), (1486, 135930), (1970, 102534), (2229, 90620), (2364, 85445), (2955, 68356), (2972, 67965), (3715, 54372), (3940, 51267), (4458, 45310), (4531, 44580), (5910, 34178), (7430, 27186), (8916, 22655), (9062, 22290), (11145, 18124), (11820, 17089), (13593, 14860)]