21318080

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:362

約数の個数: 112

約数和(自身を含む): 60082176

約数和(自身を除く): 38764096

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 307, 310, 320, 434, 448, 496, 560, 614, 620, 868, 992, 1085, 1120, 1228, 1240, 1535, 1736, 1984, 2149, 2170, 2240, 2456, 2480, 3070, 3472, 4298, 4340, 4912, 4960, 6140, 6944, 8596, 8680, 9517, 9824, 9920, 10745, 12280, 13888, 17192, 17360, 19034, 19648, 21490, 24560, 34384, 34720, 38068, 42980, 47585, 49120, 66619, 68768, 69440, 76136, 85960, 95170, 98240, 133238, 137536, 152272, 171920, 190340, 266476, 304544, 333095, 343840, 380680, 532952, 609088, 666190, 687680, 761360, 1065904, 1332380, 1522720, 2131808, 2664760, 3045440, 4263616, 5329520, 10659040, 21318080]

約数ペア:

[(1, 21318080), (2, 10659040), (4, 5329520), (5, 4263616), (7, 3045440), (8, 2664760), (10, 2131808), (14, 1522720), (16, 1332380), (20, 1065904), (28, 761360), (31, 687680), (32, 666190), (35, 609088), (40, 532952), (56, 380680), (62, 343840), (64, 333095), (70, 304544), (80, 266476), (112, 190340), (124, 171920), (140, 152272), (155, 137536), (160, 133238), (217, 98240), (224, 95170), (248, 85960), (280, 76136), (307, 69440), (310, 68768), (320, 66619), (434, 49120), (448, 47585), (496, 42980), (560, 38068), (614, 34720), (620, 34384), (868, 24560), (992, 21490), (1085, 19648), (1120, 19034), (1228, 17360), (1240, 17192), (1535, 13888), (1736, 12280), (1984, 10745), (2149, 9920), (2170, 9824), (2240, 9517), (2456, 8680), (2480, 8596), (3070, 6944), (3472, 6140), (4298, 4960), (4340, 4912)]