217990528

素因数分解:

$2^7\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1091}}^1$

素因数の和:1335

約数の個数: 64

約数和(自身を含む): 499000320

約数和(自身を除く): 281009792

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 223, 224, 446, 448, 892, 896, 1091, 1561, 1784, 2182, 3122, 3568, 4364, 6244, 7136, 7637, 8728, 12488, 14272, 15274, 17456, 24976, 28544, 30548, 34912, 49952, 61096, 69824, 99904, 122192, 139648, 199808, 243293, 244384, 486586, 488768, 973172, 977536, 1703051, 1946344, 3406102, 3892688, 6812204, 7785376, 13624408, 15570752, 27248816, 31141504, 54497632, 108995264, 217990528]

約数ペア:

[(1, 217990528), (2, 108995264), (4, 54497632), (7, 31141504), (8, 27248816), (14, 15570752), (16, 13624408), (28, 7785376), (32, 6812204), (56, 3892688), (64, 3406102), (112, 1946344), (128, 1703051), (223, 977536), (224, 973172), (446, 488768), (448, 486586), (892, 244384), (896, 243293), (1091, 199808), (1561, 139648), (1784, 122192), (2182, 99904), (3122, 69824), (3568, 61096), (4364, 49952), (6244, 34912), (7136, 30548), (7637, 28544), (8728, 24976), (12488, 17456), (14272, 15274)]