21430864

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{359}}^1$

素因数の和:428

約数の個数: 80

約数和(自身を含む): 52496640

約数和(自身を除く): 31065776

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 41, 52, 56, 82, 91, 104, 112, 164, 182, 208, 287, 328, 359, 364, 533, 574, 656, 718, 728, 1066, 1148, 1436, 1456, 2132, 2296, 2513, 2872, 3731, 4264, 4592, 4667, 5026, 5744, 7462, 8528, 9334, 10052, 14719, 14924, 18668, 20104, 29438, 29848, 32669, 37336, 40208, 58876, 59696, 65338, 74672, 103033, 117752, 130676, 191347, 206066, 235504, 261352, 382694, 412132, 522704, 765388, 824264, 1339429, 1530776, 1648528, 2678858, 3061552, 5357716, 10715432, 21430864]

約数ペア:

[(1, 21430864), (2, 10715432), (4, 5357716), (7, 3061552), (8, 2678858), (13, 1648528), (14, 1530776), (16, 1339429), (26, 824264), (28, 765388), (41, 522704), (52, 412132), (56, 382694), (82, 261352), (91, 235504), (104, 206066), (112, 191347), (164, 130676), (182, 117752), (208, 103033), (287, 74672), (328, 65338), (359, 59696), (364, 58876), (533, 40208), (574, 37336), (656, 32669), (718, 29848), (728, 29438), (1066, 20104), (1148, 18668), (1436, 14924), (1456, 14719), (2132, 10052), (2296, 9334), (2513, 8528), (2872, 7462), (3731, 5744), (4264, 5026), (4592, 4667)]