21467460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{647}}^1$

素因数の和:745

約数の個数: 96

約数和(自身を含む): 69672960

約数和(自身を除く): 48205500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 79, 84, 105, 140, 158, 210, 237, 316, 395, 420, 474, 553, 647, 790, 948, 1106, 1185, 1294, 1580, 1659, 1941, 2212, 2370, 2588, 2765, 3235, 3318, 3882, 4529, 4740, 5530, 6470, 6636, 7764, 8295, 9058, 9705, 11060, 12940, 13587, 16590, 18116, 19410, 22645, 27174, 33180, 38820, 45290, 51113, 54348, 67935, 90580, 102226, 135870, 153339, 204452, 255565, 271740, 306678, 357791, 511130, 613356, 715582, 766695, 1022260, 1073373, 1431164, 1533390, 1788955, 2146746, 3066780, 3577910, 4293492, 5366865, 7155820, 10733730, 21467460]

約数ペア:

[(1, 21467460), (2, 10733730), (3, 7155820), (4, 5366865), (5, 4293492), (6, 3577910), (7, 3066780), (10, 2146746), (12, 1788955), (14, 1533390), (15, 1431164), (20, 1073373), (21, 1022260), (28, 766695), (30, 715582), (35, 613356), (42, 511130), (60, 357791), (70, 306678), (79, 271740), (84, 255565), (105, 204452), (140, 153339), (158, 135870), (210, 102226), (237, 90580), (316, 67935), (395, 54348), (420, 51113), (474, 45290), (553, 38820), (647, 33180), (790, 27174), (948, 22645), (1106, 19410), (1185, 18116), (1294, 16590), (1580, 13587), (1659, 12940), (1941, 11060), (2212, 9705), (2370, 9058), (2588, 8295), (2765, 7764), (3235, 6636), (3318, 6470), (3882, 5530), (4529, 4740)]