81891972

素因数分解:

$2^2\times 3^5\times {\mathrm{173}}^1\times {\mathrm{487}}^1$

素因数の和:679

約数の個数: 72

約数和(自身を含む): 216355776

約数和(自身を除く): 134463804

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 173, 243, 324, 346, 486, 487, 519, 692, 972, 974, 1038, 1461, 1557, 1948, 2076, 2922, 3114, 4383, 4671, 5844, 6228, 8766, 9342, 13149, 14013, 17532, 18684, 26298, 28026, 39447, 42039, 52596, 56052, 78894, 84078, 84251, 118341, 157788, 168156, 168502, 236682, 252753, 337004, 473364, 505506, 758259, 1011012, 1516518, 2274777, 3033036, 4549554, 6824331, 9099108, 13648662, 20472993, 27297324, 40945986, 81891972]

約数ペア:

[(1, 81891972), (2, 40945986), (3, 27297324), (4, 20472993), (6, 13648662), (9, 9099108), (12, 6824331), (18, 4549554), (27, 3033036), (36, 2274777), (54, 1516518), (81, 1011012), (108, 758259), (162, 505506), (173, 473364), (243, 337004), (324, 252753), (346, 236682), (486, 168502), (487, 168156), (519, 157788), (692, 118341), (972, 84251), (974, 84078), (1038, 78894), (1461, 56052), (1557, 52596), (1948, 42039), (2076, 39447), (2922, 28026), (3114, 26298), (4383, 18684), (4671, 17532), (5844, 14013), (6228, 13149), (8766, 9342)]