321204640

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^2\times {\mathrm{2089}}^1$

素因数の和:2166

約数の個数: 72

約数和(自身を含む): 784489860

約数和(自身を除く): 463285220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 961, 992, 1240, 1922, 2089, 2480, 3844, 4178, 4805, 4960, 7688, 8356, 9610, 10445, 15376, 16712, 19220, 20890, 30752, 33424, 38440, 41780, 64759, 66848, 76880, 83560, 129518, 153760, 167120, 259036, 323795, 334240, 518072, 647590, 1036144, 1295180, 2007529, 2072288, 2590360, 4015058, 5180720, 8030116, 10037645, 10361440, 16060232, 20075290, 32120464, 40150580, 64240928, 80301160, 160602320, 321204640]

約数ペア:

[(1, 321204640), (2, 160602320), (4, 80301160), (5, 64240928), (8, 40150580), (10, 32120464), (16, 20075290), (20, 16060232), (31, 10361440), (32, 10037645), (40, 8030116), (62, 5180720), (80, 4015058), (124, 2590360), (155, 2072288), (160, 2007529), (248, 1295180), (310, 1036144), (496, 647590), (620, 518072), (961, 334240), (992, 323795), (1240, 259036), (1922, 167120), (2089, 153760), (2480, 129518), (3844, 83560), (4178, 76880), (4805, 66848), (4960, 64759), (7688, 41780), (8356, 38440), (9610, 33424), (10445, 30752), (15376, 20890), (16712, 19220)]