21139436164

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{152183}}^1$

素因数の和:152257

約数の個数: 72

約数和(自身を含む): 47605590144

約数和(自身を除く): 26466153980

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 41, 44, 77, 82, 121, 154, 164, 242, 287, 308, 451, 484, 574, 847, 902, 1148, 1694, 1804, 3157, 3388, 4961, 6314, 9922, 12628, 19844, 34727, 69454, 138908, 152183, 304366, 608732, 1065281, 1674013, 2130562, 3348026, 4261124, 6239503, 6696052, 11718091, 12479006, 18414143, 23436182, 24958012, 36828286, 43676521, 46872364, 68634533, 73656572, 87353042, 128899001, 137269066, 174706084, 257798002, 274538132, 480441731, 515596004, 754979863, 960883462, 1509959726, 1921766924, 3019919452, 5284859041, 10569718082, 21139436164]

約数ペア:

[(1, 21139436164), (2, 10569718082), (4, 5284859041), (7, 3019919452), (11, 1921766924), (14, 1509959726), (22, 960883462), (28, 754979863), (41, 515596004), (44, 480441731), (77, 274538132), (82, 257798002), (121, 174706084), (154, 137269066), (164, 128899001), (242, 87353042), (287, 73656572), (308, 68634533), (451, 46872364), (484, 43676521), (574, 36828286), (847, 24958012), (902, 23436182), (1148, 18414143), (1694, 12479006), (1804, 11718091), (3157, 6696052), (3388, 6239503), (4961, 4261124), (6314, 3348026), (9922, 2130562), (12628, 1674013), (19844, 1065281), (34727, 608732), (69454, 304366), (138908, 152183)]