21321196

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 43182720

約数和(自身を除く): 21861524

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 89, 178, 221, 271, 356, 442, 542, 884, 1084, 1157, 1513, 2314, 3026, 3523, 4607, 4628, 6052, 7046, 9214, 14092, 18428, 19669, 24119, 39338, 48238, 59891, 78676, 96476, 119782, 239564, 313547, 410023, 627094, 820046, 1254188, 1640092, 5330299, 10660598, 21321196]

約数ペア:

[(1, 21321196), (2, 10660598), (4, 5330299), (13, 1640092), (17, 1254188), (26, 820046), (34, 627094), (52, 410023), (68, 313547), (89, 239564), (178, 119782), (221, 96476), (271, 78676), (356, 59891), (442, 48238), (542, 39338), (884, 24119), (1084, 19669), (1157, 18428), (1513, 14092), (2314, 9214), (3026, 7046), (3523, 6052), (4607, 4628)]