21718860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:335

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 43599540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 107, 170, 199, 204, 214, 255, 321, 340, 398, 428, 510, 535, 597, 642, 796, 995, 1020, 1070, 1194, 1284, 1605, 1819, 1990, 2140, 2388, 2985, 3210, 3383, 3638, 3980, 5457, 5970, 6420, 6766, 7276, 9095, 10149, 10914, 11940, 13532, 16915, 18190, 20298, 21293, 21828, 27285, 33830, 36380, 40596, 42586, 50745, 54570, 63879, 67660, 85172, 101490, 106465, 109140, 127758, 202980, 212930, 255516, 319395, 361981, 425860, 638790, 723962, 1085943, 1277580, 1447924, 1809905, 2171886, 3619810, 4343772, 5429715, 7239620, 10859430, 21718860]

約数ペア:

[(1, 21718860), (2, 10859430), (3, 7239620), (4, 5429715), (5, 4343772), (6, 3619810), (10, 2171886), (12, 1809905), (15, 1447924), (17, 1277580), (20, 1085943), (30, 723962), (34, 638790), (51, 425860), (60, 361981), (68, 319395), (85, 255516), (102, 212930), (107, 202980), (170, 127758), (199, 109140), (204, 106465), (214, 101490), (255, 85172), (321, 67660), (340, 63879), (398, 54570), (428, 50745), (510, 42586), (535, 40596), (597, 36380), (642, 33830), (796, 27285), (995, 21828), (1020, 21293), (1070, 20298), (1194, 18190), (1284, 16915), (1605, 13532), (1819, 11940), (1990, 10914), (2140, 10149), (2388, 9095), (2985, 7276), (3210, 6766), (3383, 6420), (3638, 5970), (3980, 5457)]