20413890

素因数分解:

$2^1\times 3^3\times 5^1\times 7^2\times {\mathrm{1543}}^1$

素因数の和:1573

約数の個数: 96

約数和(自身を含む): 63365760

約数和(自身を除く): 42951870

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 63, 70, 90, 98, 105, 126, 135, 147, 189, 210, 245, 270, 294, 315, 378, 441, 490, 630, 735, 882, 945, 1323, 1470, 1543, 1890, 2205, 2646, 3086, 4410, 4629, 6615, 7715, 9258, 10801, 13230, 13887, 15430, 21602, 23145, 27774, 32403, 41661, 46290, 54005, 64806, 69435, 75607, 83322, 97209, 108010, 138870, 151214, 162015, 194418, 208305, 226821, 291627, 324030, 378035, 416610, 453642, 486045, 583254, 680463, 756070, 972090, 1134105, 1360926, 1458135, 2041389, 2268210, 2916270, 3402315, 4082778, 6804630, 10206945, 20413890]

約数ペア:

[(1, 20413890), (2, 10206945), (3, 6804630), (5, 4082778), (6, 3402315), (7, 2916270), (9, 2268210), (10, 2041389), (14, 1458135), (15, 1360926), (18, 1134105), (21, 972090), (27, 756070), (30, 680463), (35, 583254), (42, 486045), (45, 453642), (49, 416610), (54, 378035), (63, 324030), (70, 291627), (90, 226821), (98, 208305), (105, 194418), (126, 162015), (135, 151214), (147, 138870), (189, 108010), (210, 97209), (245, 83322), (270, 75607), (294, 69435), (315, 64806), (378, 54005), (441, 46290), (490, 41661), (630, 32403), (735, 27774), (882, 23145), (945, 21602), (1323, 15430), (1470, 13887), (1543, 13230), (1890, 10801), (2205, 9258), (2646, 7715), (3086, 6615), (4410, 4629)]