206851840

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:466

約数の個数: 144

約数和(自身を含む): 552174336

約数和(自身を除く): 345322496

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 401, 403, 416, 496, 520, 620, 640, 802, 806, 832, 992, 1040, 1240, 1280, 1604, 1612, 1664, 1984, 2005, 2015, 2080, 2480, 3208, 3224, 3328, 3968, 4010, 4030, 4160, 4960, 5213, 6416, 6448, 7936, 8020, 8060, 8320, 9920, 10426, 12431, 12832, 12896, 16040, 16120, 16640, 19840, 20852, 24862, 25664, 25792, 26065, 32080, 32240, 39680, 41704, 49724, 51328, 51584, 52130, 62155, 64160, 64480, 83408, 99448, 102656, 103168, 104260, 124310, 128320, 128960, 161603, 166816, 198896, 208520, 248620, 256640, 257920, 323206, 333632, 397792, 417040, 497240, 513280, 515840, 646412, 667264, 795584, 808015, 834080, 994480, 1292824, 1334528, 1591168, 1616030, 1668160, 1988960, 2585648, 3182336, 3232060, 3336320, 3977920, 5171296, 6464120, 6672640, 7955840, 10342592, 12928240, 15911680, 20685184, 25856480, 41370368, 51712960, 103425920, 206851840]

約数ペア:

[(1, 206851840), (2, 103425920), (4, 51712960), (5, 41370368), (8, 25856480), (10, 20685184), (13, 15911680), (16, 12928240), (20, 10342592), (26, 7955840), (31, 6672640), (32, 6464120), (40, 5171296), (52, 3977920), (62, 3336320), (64, 3232060), (65, 3182336), (80, 2585648), (104, 1988960), (124, 1668160), (128, 1616030), (130, 1591168), (155, 1334528), (160, 1292824), (208, 994480), (248, 834080), (256, 808015), (260, 795584), (310, 667264), (320, 646412), (401, 515840), (403, 513280), (416, 497240), (496, 417040), (520, 397792), (620, 333632), (640, 323206), (802, 257920), (806, 256640), (832, 248620), (992, 208520), (1040, 198896), (1240, 166816), (1280, 161603), (1604, 128960), (1612, 128320), (1664, 124310), (1984, 104260), (2005, 103168), (2015, 102656), (2080, 99448), (2480, 83408), (3208, 64480), (3224, 64160), (3328, 62155), (3968, 52130), (4010, 51584), (4030, 51328), (4160, 49724), (4960, 41704), (5213, 39680), (6416, 32240), (6448, 32080), (7936, 26065), (8020, 25792), (8060, 25664), (8320, 24862), (9920, 20852), (10426, 19840), (12431, 16640), (12832, 16120), (12896, 16040)]