20483216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:184

約数の個数: 80

約数和(自身を含む): 46247040

約数和(自身を除く): 25763824

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 71, 73, 76, 104, 142, 146, 152, 208, 247, 284, 292, 304, 494, 568, 584, 923, 949, 988, 1136, 1168, 1349, 1387, 1846, 1898, 1976, 2698, 2774, 3692, 3796, 3952, 5183, 5396, 5548, 7384, 7592, 10366, 10792, 11096, 14768, 15184, 17537, 18031, 20732, 21584, 22192, 35074, 36062, 41464, 67379, 70148, 72124, 82928, 98477, 134758, 140296, 144248, 196954, 269516, 280592, 288496, 393908, 539032, 787816, 1078064, 1280201, 1575632, 2560402, 5120804, 10241608, 20483216]

約数ペア:

[(1, 20483216), (2, 10241608), (4, 5120804), (8, 2560402), (13, 1575632), (16, 1280201), (19, 1078064), (26, 787816), (38, 539032), (52, 393908), (71, 288496), (73, 280592), (76, 269516), (104, 196954), (142, 144248), (146, 140296), (152, 134758), (208, 98477), (247, 82928), (284, 72124), (292, 70148), (304, 67379), (494, 41464), (568, 36062), (584, 35074), (923, 22192), (949, 21584), (988, 20732), (1136, 18031), (1168, 17537), (1349, 15184), (1387, 14768), (1846, 11096), (1898, 10792), (1976, 10366), (2698, 7592), (2774, 7384), (3692, 5548), (3796, 5396), (3952, 5183)]