20851320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{241}}^1$

素因数の和:365

約数の個数: 128

約数和(自身を含む): 72483840

約数和(自身を除く): 51632520

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, 103, 105, 120, 140, 168, 206, 210, 241, 280, 309, 412, 420, 482, 515, 618, 721, 723, 824, 840, 964, 1030, 1205, 1236, 1442, 1446, 1545, 1687, 1928, 2060, 2163, 2410, 2472, 2884, 2892, 3090, 3374, 3605, 3615, 4120, 4326, 4820, 5061, 5768, 5784, 6180, 6748, 7210, 7230, 8435, 8652, 9640, 10122, 10815, 12360, 13496, 14420, 14460, 16870, 17304, 20244, 21630, 24823, 25305, 28840, 28920, 33740, 40488, 43260, 49646, 50610, 67480, 74469, 86520, 99292, 101220, 124115, 148938, 173761, 198584, 202440, 248230, 297876, 347522, 372345, 496460, 521283, 595752, 695044, 744690, 868805, 992920, 1042566, 1390088, 1489380, 1737610, 2085132, 2606415, 2978760, 3475220, 4170264, 5212830, 6950440, 10425660, 20851320]

約数ペア:

[(1, 20851320), (2, 10425660), (3, 6950440), (4, 5212830), (5, 4170264), (6, 3475220), (7, 2978760), (8, 2606415), (10, 2085132), (12, 1737610), (14, 1489380), (15, 1390088), (20, 1042566), (21, 992920), (24, 868805), (28, 744690), (30, 695044), (35, 595752), (40, 521283), (42, 496460), (56, 372345), (60, 347522), (70, 297876), (84, 248230), (103, 202440), (105, 198584), (120, 173761), (140, 148938), (168, 124115), (206, 101220), (210, 99292), (241, 86520), (280, 74469), (309, 67480), (412, 50610), (420, 49646), (482, 43260), (515, 40488), (618, 33740), (721, 28920), (723, 28840), (824, 25305), (840, 24823), (964, 21630), (1030, 20244), (1205, 17304), (1236, 16870), (1442, 14460), (1446, 14420), (1545, 13496), (1687, 12360), (1928, 10815), (2060, 10122), (2163, 9640), (2410, 8652), (2472, 8435), (2884, 7230), (2892, 7210), (3090, 6748), (3374, 6180), (3605, 5784), (3615, 5768), (4120, 5061), (4326, 4820)]