645481040

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{2371}}^1$

素因数の和:2508

約数の個数: 80

約数和(自身を含む): 1556525376

約数和(自身を除く): 911044336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 83, 164, 166, 205, 328, 332, 410, 415, 656, 664, 820, 830, 1328, 1640, 1660, 2371, 3280, 3320, 3403, 4742, 6640, 6806, 9484, 11855, 13612, 17015, 18968, 23710, 27224, 34030, 37936, 47420, 54448, 68060, 94840, 97211, 136120, 189680, 194422, 196793, 272240, 388844, 393586, 486055, 777688, 787172, 972110, 983965, 1555376, 1574344, 1944220, 1967930, 3148688, 3888440, 3935860, 7776880, 7871720, 8068513, 15743440, 16137026, 32274052, 40342565, 64548104, 80685130, 129096208, 161370260, 322740520, 645481040]

約数ペア:

[(1, 645481040), (2, 322740520), (4, 161370260), (5, 129096208), (8, 80685130), (10, 64548104), (16, 40342565), (20, 32274052), (40, 16137026), (41, 15743440), (80, 8068513), (82, 7871720), (83, 7776880), (164, 3935860), (166, 3888440), (205, 3148688), (328, 1967930), (332, 1944220), (410, 1574344), (415, 1555376), (656, 983965), (664, 972110), (820, 787172), (830, 777688), (1328, 486055), (1640, 393586), (1660, 388844), (2371, 272240), (3280, 196793), (3320, 194422), (3403, 189680), (4742, 136120), (6640, 97211), (6806, 94840), (9484, 68060), (11855, 54448), (13612, 47420), (17015, 37936), (18968, 34030), (23710, 27224)]