21131040

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:375

約数の個数: 192

約数和(自身を含む): 80317440

約数和(自身を除く): 59186400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 32, 35, 38, 40, 42, 48, 56, 57, 60, 70, 76, 80, 84, 95, 96, 105, 112, 114, 120, 133, 140, 152, 160, 168, 190, 210, 224, 228, 240, 266, 280, 285, 304, 331, 336, 380, 399, 420, 456, 480, 532, 560, 570, 608, 662, 665, 672, 760, 798, 840, 912, 993, 1064, 1120, 1140, 1324, 1330, 1520, 1596, 1655, 1680, 1824, 1986, 1995, 2128, 2280, 2317, 2648, 2660, 3040, 3192, 3310, 3360, 3972, 3990, 4256, 4560, 4634, 4965, 5296, 5320, 6289, 6384, 6620, 6951, 7944, 7980, 9120, 9268, 9930, 10592, 10640, 11585, 12578, 12768, 13240, 13902, 15888, 15960, 18536, 18867, 19860, 21280, 23170, 25156, 26480, 27804, 31445, 31776, 31920, 34755, 37072, 37734, 39720, 44023, 46340, 50312, 52960, 55608, 62890, 63840, 69510, 74144, 75468, 79440, 88046, 92680, 94335, 100624, 111216, 125780, 132069, 139020, 150936, 158880, 176092, 185360, 188670, 201248, 220115, 222432, 251560, 264138, 278040, 301872, 352184, 370720, 377340, 440230, 503120, 528276, 556080, 603744, 660345, 704368, 754680, 880460, 1006240, 1056552, 1112160, 1320690, 1408736, 1509360, 1760920, 2113104, 2641380, 3018720, 3521840, 4226208, 5282760, 7043680, 10565520, 21131040]

約数ペア:

[(1, 21131040), (2, 10565520), (3, 7043680), (4, 5282760), (5, 4226208), (6, 3521840), (7, 3018720), (8, 2641380), (10, 2113104), (12, 1760920), (14, 1509360), (15, 1408736), (16, 1320690), (19, 1112160), (20, 1056552), (21, 1006240), (24, 880460), (28, 754680), (30, 704368), (32, 660345), (35, 603744), (38, 556080), (40, 528276), (42, 503120), (48, 440230), (56, 377340), (57, 370720), (60, 352184), (70, 301872), (76, 278040), (80, 264138), (84, 251560), (95, 222432), (96, 220115), (105, 201248), (112, 188670), (114, 185360), (120, 176092), (133, 158880), (140, 150936), (152, 139020), (160, 132069), (168, 125780), (190, 111216), (210, 100624), (224, 94335), (228, 92680), (240, 88046), (266, 79440), (280, 75468), (285, 74144), (304, 69510), (331, 63840), (336, 62890), (380, 55608), (399, 52960), (420, 50312), (456, 46340), (480, 44023), (532, 39720), (560, 37734), (570, 37072), (608, 34755), (662, 31920), (665, 31776), (672, 31445), (760, 27804), (798, 26480), (840, 25156), (912, 23170), (993, 21280), (1064, 19860), (1120, 18867), (1140, 18536), (1324, 15960), (1330, 15888), (1520, 13902), (1596, 13240), (1655, 12768), (1680, 12578), (1824, 11585), (1986, 10640), (1995, 10592), (2128, 9930), (2280, 9268), (2317, 9120), (2648, 7980), (2660, 7944), (3040, 6951), (3192, 6620), (3310, 6384), (3360, 6289), (3972, 5320), (3990, 5296), (4256, 4965), (4560, 4634)]