21631120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{107}}^1$

素因数の和:165

約数の個数: 120

約数和(自身を含む): 61228224

約数和(自身を除く): 39597104

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 107, 112, 133, 140, 152, 190, 214, 266, 280, 304, 361, 380, 428, 532, 535, 560, 665, 722, 749, 760, 856, 1064, 1070, 1330, 1444, 1498, 1520, 1712, 1805, 2033, 2128, 2140, 2527, 2660, 2888, 2996, 3610, 3745, 4066, 4280, 5054, 5320, 5776, 5992, 7220, 7490, 8132, 8560, 10108, 10165, 10640, 11984, 12635, 14231, 14440, 14980, 16264, 20216, 20330, 25270, 28462, 28880, 29960, 32528, 38627, 40432, 40660, 50540, 56924, 59920, 71155, 77254, 81320, 101080, 113848, 142310, 154508, 162640, 193135, 202160, 227696, 270389, 284620, 309016, 386270, 540778, 569240, 618032, 772540, 1081556, 1138480, 1351945, 1545080, 2163112, 2703890, 3090160, 4326224, 5407780, 10815560, 21631120]

約数ペア:

[(1, 21631120), (2, 10815560), (4, 5407780), (5, 4326224), (7, 3090160), (8, 2703890), (10, 2163112), (14, 1545080), (16, 1351945), (19, 1138480), (20, 1081556), (28, 772540), (35, 618032), (38, 569240), (40, 540778), (56, 386270), (70, 309016), (76, 284620), (80, 270389), (95, 227696), (107, 202160), (112, 193135), (133, 162640), (140, 154508), (152, 142310), (190, 113848), (214, 101080), (266, 81320), (280, 77254), (304, 71155), (361, 59920), (380, 56924), (428, 50540), (532, 40660), (535, 40432), (560, 38627), (665, 32528), (722, 29960), (749, 28880), (760, 28462), (856, 25270), (1064, 20330), (1070, 20216), (1330, 16264), (1444, 14980), (1498, 14440), (1520, 14231), (1712, 12635), (1805, 11984), (2033, 10640), (2128, 10165), (2140, 10108), (2527, 8560), (2660, 8132), (2888, 7490), (2996, 7220), (3610, 5992), (3745, 5776), (4066, 5320), (4280, 5054)]