12928240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:458

約数の個数: 80

約数和(自身を含む): 33497856

約数和(自身を除く): 20569616

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 401, 403, 496, 520, 620, 802, 806, 1040, 1240, 1604, 1612, 2005, 2015, 2480, 3208, 3224, 4010, 4030, 5213, 6416, 6448, 8020, 8060, 10426, 12431, 16040, 16120, 20852, 24862, 26065, 32080, 32240, 41704, 49724, 52130, 62155, 83408, 99448, 104260, 124310, 161603, 198896, 208520, 248620, 323206, 417040, 497240, 646412, 808015, 994480, 1292824, 1616030, 2585648, 3232060, 6464120, 12928240]

約数ペア:

[(1, 12928240), (2, 6464120), (4, 3232060), (5, 2585648), (8, 1616030), (10, 1292824), (13, 994480), (16, 808015), (20, 646412), (26, 497240), (31, 417040), (40, 323206), (52, 248620), (62, 208520), (65, 198896), (80, 161603), (104, 124310), (124, 104260), (130, 99448), (155, 83408), (208, 62155), (248, 52130), (260, 49724), (310, 41704), (401, 32240), (403, 32080), (496, 26065), (520, 24862), (620, 20852), (802, 16120), (806, 16040), (1040, 12431), (1240, 10426), (1604, 8060), (1612, 8020), (2005, 6448), (2015, 6416), (2480, 5213), (3208, 4030), (3224, 4010)]