20641264

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{293}}^1$

素因数の和:362

約数の個数: 80

約数和(自身を含む): 49871808

約数和(自身を除く): 29230544

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 37, 56, 68, 74, 112, 119, 136, 148, 238, 259, 272, 293, 296, 476, 518, 586, 592, 629, 952, 1036, 1172, 1258, 1904, 2051, 2072, 2344, 2516, 4102, 4144, 4403, 4688, 4981, 5032, 8204, 8806, 9962, 10064, 10841, 16408, 17612, 19924, 21682, 32816, 34867, 35224, 39848, 43364, 69734, 70448, 75887, 79696, 86728, 139468, 151774, 173456, 184297, 278936, 303548, 368594, 557872, 607096, 737188, 1214192, 1290079, 1474376, 2580158, 2948752, 5160316, 10320632, 20641264]

約数ペア:

[(1, 20641264), (2, 10320632), (4, 5160316), (7, 2948752), (8, 2580158), (14, 1474376), (16, 1290079), (17, 1214192), (28, 737188), (34, 607096), (37, 557872), (56, 368594), (68, 303548), (74, 278936), (112, 184297), (119, 173456), (136, 151774), (148, 139468), (238, 86728), (259, 79696), (272, 75887), (293, 70448), (296, 69734), (476, 43364), (518, 39848), (586, 35224), (592, 34867), (629, 32816), (952, 21682), (1036, 19924), (1172, 17612), (1258, 16408), (1904, 10841), (2051, 10064), (2072, 9962), (2344, 8806), (2516, 8204), (4102, 5032), (4144, 4981), (4403, 4688)]