21182280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{167}}^1$

素因数の和:339

約数の個数: 128

約数和(自身を含む): 73543680

約数和(自身を除く): 52361400

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, 151, 167, 168, 210, 280, 302, 334, 420, 453, 501, 604, 668, 755, 835, 840, 906, 1002, 1057, 1169, 1208, 1336, 1510, 1670, 1812, 2004, 2114, 2265, 2338, 2505, 3020, 3171, 3340, 3507, 3624, 4008, 4228, 4530, 4676, 5010, 5285, 5845, 6040, 6342, 6680, 7014, 8456, 9060, 9352, 10020, 10570, 11690, 12684, 14028, 15855, 17535, 18120, 20040, 21140, 23380, 25217, 25368, 28056, 31710, 35070, 42280, 46760, 50434, 63420, 70140, 75651, 100868, 126085, 126840, 140280, 151302, 176519, 201736, 252170, 302604, 353038, 378255, 504340, 529557, 605208, 706076, 756510, 882595, 1008680, 1059114, 1412152, 1513020, 1765190, 2118228, 2647785, 3026040, 3530380, 4236456, 5295570, 7060760, 10591140, 21182280]

約数ペア:

[(1, 21182280), (2, 10591140), (3, 7060760), (4, 5295570), (5, 4236456), (6, 3530380), (7, 3026040), (8, 2647785), (10, 2118228), (12, 1765190), (14, 1513020), (15, 1412152), (20, 1059114), (21, 1008680), (24, 882595), (28, 756510), (30, 706076), (35, 605208), (40, 529557), (42, 504340), (56, 378255), (60, 353038), (70, 302604), (84, 252170), (105, 201736), (120, 176519), (140, 151302), (151, 140280), (167, 126840), (168, 126085), (210, 100868), (280, 75651), (302, 70140), (334, 63420), (420, 50434), (453, 46760), (501, 42280), (604, 35070), (668, 31710), (755, 28056), (835, 25368), (840, 25217), (906, 23380), (1002, 21140), (1057, 20040), (1169, 18120), (1208, 17535), (1336, 15855), (1510, 14028), (1670, 12684), (1812, 11690), (2004, 10570), (2114, 10020), (2265, 9352), (2338, 9060), (2505, 8456), (3020, 7014), (3171, 6680), (3340, 6342), (3507, 6040), (3624, 5845), (4008, 5285), (4228, 5010), (4530, 4676)]