19851984

素因数分解:

$2^4\times 3^2\times {\mathrm{89}}^1\times {\mathrm{1549}}^1$

素因数の和:1652

約数の個数: 60

約数和(自身を含む): 56218500

約数和(自身を除く): 36366516

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 89, 144, 178, 267, 356, 534, 712, 801, 1068, 1424, 1549, 1602, 2136, 3098, 3204, 4272, 4647, 6196, 6408, 9294, 12392, 12816, 13941, 18588, 24784, 27882, 37176, 55764, 74352, 111528, 137861, 223056, 275722, 413583, 551444, 827166, 1102888, 1240749, 1654332, 2205776, 2481498, 3308664, 4962996, 6617328, 9925992, 19851984]

約数ペア:

[(1, 19851984), (2, 9925992), (3, 6617328), (4, 4962996), (6, 3308664), (8, 2481498), (9, 2205776), (12, 1654332), (16, 1240749), (18, 1102888), (24, 827166), (36, 551444), (48, 413583), (72, 275722), (89, 223056), (144, 137861), (178, 111528), (267, 74352), (356, 55764), (534, 37176), (712, 27882), (801, 24784), (1068, 18588), (1424, 13941), (1549, 12816), (1602, 12392), (2136, 9294), (3098, 6408), (3204, 6196), (4272, 4647)]