81460980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23819}}^1$

素因数の和:23853

約数の個数: 72

約数和(自身を含む): 260114400

約数和(自身を除く): 178653420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 23819, 47638, 71457, 95276, 119095, 142914, 214371, 238190, 285828, 357285, 428742, 452561, 476380, 714570, 857484, 905122, 1071855, 1357683, 1429140, 1810244, 2143710, 2262805, 2715366, 4073049, 4287420, 4525610, 5430732, 6788415, 8146098, 9051220, 13576830, 16292196, 20365245, 27153660, 40730490, 81460980]

約数ペア:

[(1, 81460980), (2, 40730490), (3, 27153660), (4, 20365245), (5, 16292196), (6, 13576830), (9, 9051220), (10, 8146098), (12, 6788415), (15, 5430732), (18, 4525610), (19, 4287420), (20, 4073049), (30, 2715366), (36, 2262805), (38, 2143710), (45, 1810244), (57, 1429140), (60, 1357683), (76, 1071855), (90, 905122), (95, 857484), (114, 714570), (171, 476380), (180, 452561), (190, 428742), (228, 357285), (285, 285828), (342, 238190), (380, 214371), (570, 142914), (684, 119095), (855, 95276), (1140, 71457), (1710, 47638), (3420, 23819)]