20803784

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 44452800

約数和(自身を除く): 23649016

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 83, 97, 136, 152, 166, 194, 323, 332, 388, 646, 664, 776, 1292, 1411, 1577, 1649, 1843, 2584, 2822, 3154, 3298, 3686, 5644, 6308, 6596, 7372, 8051, 11288, 12616, 13192, 14744, 16102, 26809, 31331, 32204, 53618, 62662, 64408, 107236, 125324, 136867, 152969, 214472, 250648, 273734, 305938, 547468, 611876, 1094936, 1223752, 2600473, 5200946, 10401892, 20803784]

約数ペア:

[(1, 20803784), (2, 10401892), (4, 5200946), (8, 2600473), (17, 1223752), (19, 1094936), (34, 611876), (38, 547468), (68, 305938), (76, 273734), (83, 250648), (97, 214472), (136, 152969), (152, 136867), (166, 125324), (194, 107236), (323, 64408), (332, 62662), (388, 53618), (646, 32204), (664, 31331), (776, 26809), (1292, 16102), (1411, 14744), (1577, 13192), (1649, 12616), (1843, 11288), (2584, 8051), (2822, 7372), (3154, 6596), (3298, 6308), (3686, 5644)]