20801676840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{6481}}^1\times {\mathrm{3821}}^1$

素因数の和:10323

約数の個数: 128

約数和(自身を含む): 71349707520

約数和(自身を除く): 50548030680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 3821, 6481, 7642, 11463, 12962, 15284, 19105, 19443, 22926, 25924, 26747, 30568, 32405, 38210, 38886, 45367, 45852, 51848, 53494, 57315, 64810, 76420, 77772, 80241, 90734, 91704, 97215, 106988, 114630, 129620, 133735, 136101, 152840, 155544, 160482, 181468, 194430, 213976, 226835, 229260, 259240, 267470, 272202, 320964, 362936, 388860, 401205, 453670, 458520, 534940, 544404, 641928, 680505, 777720, 802410, 907340, 1069880, 1088808, 1361010, 1604820, 1814680, 2722020, 3209640, 5444040, 24763901, 49527802, 74291703, 99055604, 123819505, 148583406, 173347307, 198111208, 247639010, 297166812, 346694614, 371458515, 495278020, 520041921, 594333624, 693389228, 742917030, 866736535, 990556040, 1040083842, 1386778456, 1485834060, 1733473070, 2080167684, 2600209605, 2971668120, 3466946140, 4160335368, 5200419210, 6933892280, 10400838420, 20801676840]

約数ペア:

[(1, 20801676840), (2, 10400838420), (3, 6933892280), (4, 5200419210), (5, 4160335368), (6, 3466946140), (7, 2971668120), (8, 2600209605), (10, 2080167684), (12, 1733473070), (14, 1485834060), (15, 1386778456), (20, 1040083842), (21, 990556040), (24, 866736535), (28, 742917030), (30, 693389228), (35, 594333624), (40, 520041921), (42, 495278020), (56, 371458515), (60, 346694614), (70, 297166812), (84, 247639010), (105, 198111208), (120, 173347307), (140, 148583406), (168, 123819505), (210, 99055604), (280, 74291703), (420, 49527802), (840, 24763901), (3821, 5444040), (6481, 3209640), (7642, 2722020), (11463, 1814680), (12962, 1604820), (15284, 1361010), (19105, 1088808), (19443, 1069880), (22926, 907340), (25924, 802410), (26747, 777720), (30568, 680505), (32405, 641928), (38210, 544404), (38886, 534940), (45367, 458520), (45852, 453670), (51848, 401205), (53494, 388860), (57315, 362936), (64810, 320964), (76420, 272202), (77772, 267470), (80241, 259240), (90734, 229260), (91704, 226835), (97215, 213976), (106988, 194430), (114630, 181468), (129620, 160482), (133735, 155544), (136101, 152840)]