28256940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{877}}^1$

素因数の和:1071

約数の個数: 72

約数和(自身を含む): 86289840

約数和(自身を除く): 58032900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 179, 180, 358, 537, 716, 877, 895, 1074, 1611, 1754, 1790, 2148, 2631, 2685, 3222, 3508, 3580, 4385, 5262, 5370, 6444, 7893, 8055, 8770, 10524, 10740, 13155, 15786, 16110, 17540, 26310, 31572, 32220, 39465, 52620, 78930, 156983, 157860, 313966, 470949, 627932, 784915, 941898, 1412847, 1569830, 1883796, 2354745, 2825694, 3139660, 4709490, 5651388, 7064235, 9418980, 14128470, 28256940]

約数ペア:

[(1, 28256940), (2, 14128470), (3, 9418980), (4, 7064235), (5, 5651388), (6, 4709490), (9, 3139660), (10, 2825694), (12, 2354745), (15, 1883796), (18, 1569830), (20, 1412847), (30, 941898), (36, 784915), (45, 627932), (60, 470949), (90, 313966), (179, 157860), (180, 156983), (358, 78930), (537, 52620), (716, 39465), (877, 32220), (895, 31572), (1074, 26310), (1611, 17540), (1754, 16110), (1790, 15786), (2148, 13155), (2631, 10740), (2685, 10524), (3222, 8770), (3508, 8055), (3580, 7893), (4385, 6444), (5262, 5370)]