21321090

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:441

約数の個数: 128

約数和(自身を含む): 67392000

約数和(自身を除く): 46070910

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 29, 30, 35, 42, 45, 54, 58, 63, 70, 87, 90, 105, 126, 135, 145, 174, 189, 203, 210, 261, 270, 290, 315, 378, 389, 406, 435, 522, 609, 630, 778, 783, 870, 945, 1015, 1167, 1218, 1305, 1566, 1827, 1890, 1945, 2030, 2334, 2610, 2723, 3045, 3501, 3654, 3890, 3915, 5446, 5481, 5835, 6090, 7002, 7830, 8169, 9135, 10503, 10962, 11281, 11670, 13615, 16338, 17505, 18270, 21006, 22562, 24507, 27230, 27405, 33843, 35010, 40845, 49014, 52515, 54810, 56405, 67686, 73521, 78967, 81690, 101529, 105030, 112810, 122535, 147042, 157934, 169215, 203058, 236901, 245070, 304587, 338430, 367605, 394835, 473802, 507645, 609174, 710703, 735210, 789670, 1015290, 1184505, 1421406, 1522935, 2132109, 2369010, 3045870, 3553515, 4264218, 7107030, 10660545, 21321090]

約数ペア:

[(1, 21321090), (2, 10660545), (3, 7107030), (5, 4264218), (6, 3553515), (7, 3045870), (9, 2369010), (10, 2132109), (14, 1522935), (15, 1421406), (18, 1184505), (21, 1015290), (27, 789670), (29, 735210), (30, 710703), (35, 609174), (42, 507645), (45, 473802), (54, 394835), (58, 367605), (63, 338430), (70, 304587), (87, 245070), (90, 236901), (105, 203058), (126, 169215), (135, 157934), (145, 147042), (174, 122535), (189, 112810), (203, 105030), (210, 101529), (261, 81690), (270, 78967), (290, 73521), (315, 67686), (378, 56405), (389, 54810), (406, 52515), (435, 49014), (522, 40845), (609, 35010), (630, 33843), (778, 27405), (783, 27230), (870, 24507), (945, 22562), (1015, 21006), (1167, 18270), (1218, 17505), (1305, 16338), (1566, 13615), (1827, 11670), (1890, 11281), (1945, 10962), (2030, 10503), (2334, 9135), (2610, 8169), (2723, 7830), (3045, 7002), (3501, 6090), (3654, 5835), (3890, 5481), (3915, 5446)]