199896680

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:271

約数の個数: 128

約数和(自身を含む): 498769920

約数和(自身を除く): 298873240

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 43, 46, 62, 86, 92, 115, 124, 155, 163, 172, 184, 215, 230, 248, 310, 326, 344, 430, 460, 620, 652, 713, 815, 860, 920, 989, 1240, 1304, 1333, 1426, 1630, 1720, 1978, 2666, 2852, 3260, 3565, 3749, 3956, 4945, 5053, 5332, 5704, 6520, 6665, 7009, 7130, 7498, 7912, 9890, 10106, 10664, 13330, 14018, 14260, 14996, 18745, 19780, 20212, 25265, 26660, 28036, 28520, 29992, 30659, 35045, 37490, 39560, 40424, 50530, 53320, 56072, 61318, 70090, 74980, 101060, 116219, 122636, 140180, 149960, 153295, 161207, 202120, 217279, 232438, 245272, 280360, 306590, 322414, 434558, 464876, 581095, 613180, 644828, 806035, 869116, 929752, 1086395, 1162190, 1226360, 1289656, 1612070, 1738232, 2172790, 2324380, 3224140, 4345580, 4648760, 4997417, 6448280, 8691160, 9994834, 19989668, 24987085, 39979336, 49974170, 99948340, 199896680]

約数ペア:

[(1, 199896680), (2, 99948340), (4, 49974170), (5, 39979336), (8, 24987085), (10, 19989668), (20, 9994834), (23, 8691160), (31, 6448280), (40, 4997417), (43, 4648760), (46, 4345580), (62, 3224140), (86, 2324380), (92, 2172790), (115, 1738232), (124, 1612070), (155, 1289656), (163, 1226360), (172, 1162190), (184, 1086395), (215, 929752), (230, 869116), (248, 806035), (310, 644828), (326, 613180), (344, 581095), (430, 464876), (460, 434558), (620, 322414), (652, 306590), (713, 280360), (815, 245272), (860, 232438), (920, 217279), (989, 202120), (1240, 161207), (1304, 153295), (1333, 149960), (1426, 140180), (1630, 122636), (1720, 116219), (1978, 101060), (2666, 74980), (2852, 70090), (3260, 61318), (3565, 56072), (3749, 53320), (3956, 50530), (4945, 40424), (5053, 39560), (5332, 37490), (5704, 35045), (6520, 30659), (6665, 29992), (7009, 28520), (7130, 28036), (7498, 26660), (7912, 25265), (9890, 20212), (10106, 19780), (10664, 18745), (13330, 14996), (14018, 14260)]