20118420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2281}}^1$

素因数の和:2310

約数の個数: 108

約数和(自身を含む): 71020404

約数和(自身を除く): 50901984

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2281, 2940, 4410, 4562, 6843, 8820, 9124, 11405, 13686, 15967, 20529, 22810, 27372, 31934, 34215, 41058, 45620, 47901, 63868, 68430, 79835, 82116, 95802, 102645, 111769, 136860, 143703, 159670, 191604, 205290, 223538, 239505, 287406, 319340, 335307, 410580, 447076, 479010, 558845, 574812, 670614, 718515, 958020, 1005921, 1117690, 1341228, 1437030, 1676535, 2011842, 2235380, 2874060, 3353070, 4023684, 5029605, 6706140, 10059210, 20118420]

約数ペア:

[(1, 20118420), (2, 10059210), (3, 6706140), (4, 5029605), (5, 4023684), (6, 3353070), (7, 2874060), (9, 2235380), (10, 2011842), (12, 1676535), (14, 1437030), (15, 1341228), (18, 1117690), (20, 1005921), (21, 958020), (28, 718515), (30, 670614), (35, 574812), (36, 558845), (42, 479010), (45, 447076), (49, 410580), (60, 335307), (63, 319340), (70, 287406), (84, 239505), (90, 223538), (98, 205290), (105, 191604), (126, 159670), (140, 143703), (147, 136860), (180, 111769), (196, 102645), (210, 95802), (245, 82116), (252, 79835), (294, 68430), (315, 63868), (420, 47901), (441, 45620), (490, 41058), (588, 34215), (630, 31934), (735, 27372), (882, 22810), (980, 20529), (1260, 15967), (1470, 13686), (1764, 11405), (2205, 9124), (2281, 8820), (2940, 6843), (4410, 4562)]