21813584

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:268

約数の個数: 80

約数和(自身を含む): 49996800

約数和(自身を除く): 28183216

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 31, 34, 52, 62, 68, 104, 124, 136, 199, 208, 221, 248, 272, 398, 403, 442, 496, 527, 796, 806, 884, 1054, 1592, 1612, 1768, 2108, 2587, 3184, 3224, 3383, 3536, 4216, 5174, 6169, 6448, 6766, 6851, 8432, 10348, 12338, 13532, 13702, 20696, 24676, 27064, 27404, 41392, 43979, 49352, 54128, 54808, 80197, 87958, 98704, 104873, 109616, 160394, 175916, 209746, 320788, 351832, 419492, 641576, 703664, 838984, 1283152, 1363349, 1677968, 2726698, 5453396, 10906792, 21813584]

約数ペア:

[(1, 21813584), (2, 10906792), (4, 5453396), (8, 2726698), (13, 1677968), (16, 1363349), (17, 1283152), (26, 838984), (31, 703664), (34, 641576), (52, 419492), (62, 351832), (68, 320788), (104, 209746), (124, 175916), (136, 160394), (199, 109616), (208, 104873), (221, 98704), (248, 87958), (272, 80197), (398, 54808), (403, 54128), (442, 49352), (496, 43979), (527, 41392), (796, 27404), (806, 27064), (884, 24676), (1054, 20696), (1592, 13702), (1612, 13532), (1768, 12338), (2108, 10348), (2587, 8432), (3184, 6851), (3224, 6766), (3383, 6448), (3536, 6169), (4216, 5174)]