19936784

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:352

約数の個数: 80

約数和(自身を含む): 48175488

約数和(自身を除く): 28238704

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 37, 56, 68, 74, 112, 119, 136, 148, 238, 259, 272, 283, 296, 476, 518, 566, 592, 629, 952, 1036, 1132, 1258, 1904, 1981, 2072, 2264, 2516, 3962, 4144, 4403, 4528, 4811, 5032, 7924, 8806, 9622, 10064, 10471, 15848, 17612, 19244, 20942, 31696, 33677, 35224, 38488, 41884, 67354, 70448, 73297, 76976, 83768, 134708, 146594, 167536, 178007, 269416, 293188, 356014, 538832, 586376, 712028, 1172752, 1246049, 1424056, 2492098, 2848112, 4984196, 9968392, 19936784]

約数ペア:

[(1, 19936784), (2, 9968392), (4, 4984196), (7, 2848112), (8, 2492098), (14, 1424056), (16, 1246049), (17, 1172752), (28, 712028), (34, 586376), (37, 538832), (56, 356014), (68, 293188), (74, 269416), (112, 178007), (119, 167536), (136, 146594), (148, 134708), (238, 83768), (259, 76976), (272, 73297), (283, 70448), (296, 67354), (476, 41884), (518, 38488), (566, 35224), (592, 33677), (629, 31696), (952, 20942), (1036, 19244), (1132, 17612), (1258, 15848), (1904, 10471), (1981, 10064), (2072, 9622), (2264, 8806), (2516, 7924), (3962, 5032), (4144, 4811), (4403, 4528)]