20816704

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1$

素因数の和:120

約数の個数: 84

約数和(自身を含む): 47032164

約数和(自身を除く): 26215460

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 53, 64, 68, 76, 106, 136, 152, 212, 272, 304, 323, 361, 424, 544, 608, 646, 722, 848, 901, 1007, 1088, 1216, 1292, 1444, 1696, 1802, 2014, 2584, 2888, 3392, 3604, 4028, 5168, 5776, 6137, 7208, 8056, 10336, 11552, 12274, 14416, 16112, 17119, 19133, 20672, 23104, 24548, 28832, 32224, 34238, 38266, 49096, 57664, 64448, 68476, 76532, 98192, 136952, 153064, 196384, 273904, 306128, 325261, 392768, 547808, 612256, 650522, 1095616, 1224512, 1301044, 2602088, 5204176, 10408352, 20816704]

約数ペア:

[(1, 20816704), (2, 10408352), (4, 5204176), (8, 2602088), (16, 1301044), (17, 1224512), (19, 1095616), (32, 650522), (34, 612256), (38, 547808), (53, 392768), (64, 325261), (68, 306128), (76, 273904), (106, 196384), (136, 153064), (152, 136952), (212, 98192), (272, 76532), (304, 68476), (323, 64448), (361, 57664), (424, 49096), (544, 38266), (608, 34238), (646, 32224), (722, 28832), (848, 24548), (901, 23104), (1007, 20672), (1088, 19133), (1216, 17119), (1292, 16112), (1444, 14416), (1696, 12274), (1802, 11552), (2014, 10336), (2584, 8056), (2888, 7208), (3392, 6137), (3604, 5776), (4028, 5168)]