20401080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:333

約数の個数: 128

約数和(自身を含む): 70848000

約数和(自身を除く): 50446920

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, 149, 163, 168, 210, 280, 298, 326, 420, 447, 489, 596, 652, 745, 815, 840, 894, 978, 1043, 1141, 1192, 1304, 1490, 1630, 1788, 1956, 2086, 2235, 2282, 2445, 2980, 3129, 3260, 3423, 3576, 3912, 4172, 4470, 4564, 4890, 5215, 5705, 5960, 6258, 6520, 6846, 8344, 8940, 9128, 9780, 10430, 11410, 12516, 13692, 15645, 17115, 17880, 19560, 20860, 22820, 24287, 25032, 27384, 31290, 34230, 41720, 45640, 48574, 62580, 68460, 72861, 97148, 121435, 125160, 136920, 145722, 170009, 194296, 242870, 291444, 340018, 364305, 485740, 510027, 582888, 680036, 728610, 850045, 971480, 1020054, 1360072, 1457220, 1700090, 2040108, 2550135, 2914440, 3400180, 4080216, 5100270, 6800360, 10200540, 20401080]

約数ペア:

[(1, 20401080), (2, 10200540), (3, 6800360), (4, 5100270), (5, 4080216), (6, 3400180), (7, 2914440), (8, 2550135), (10, 2040108), (12, 1700090), (14, 1457220), (15, 1360072), (20, 1020054), (21, 971480), (24, 850045), (28, 728610), (30, 680036), (35, 582888), (40, 510027), (42, 485740), (56, 364305), (60, 340018), (70, 291444), (84, 242870), (105, 194296), (120, 170009), (140, 145722), (149, 136920), (163, 125160), (168, 121435), (210, 97148), (280, 72861), (298, 68460), (326, 62580), (420, 48574), (447, 45640), (489, 41720), (596, 34230), (652, 31290), (745, 27384), (815, 25032), (840, 24287), (894, 22820), (978, 20860), (1043, 19560), (1141, 17880), (1192, 17115), (1304, 15645), (1490, 13692), (1630, 12516), (1788, 11410), (1956, 10430), (2086, 9780), (2235, 9128), (2282, 8940), (2445, 8344), (2980, 6846), (3129, 6520), (3260, 6258), (3423, 5960), (3576, 5705), (3912, 5215), (4172, 4890), (4470, 4564)]