21333625.000000000

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1$

素因数の和:485

約数の個数: 72

約数和(自身を含む): 249793152

約数和(自身を除く): 132046720

約数列:

[1, 2, 4, 8, 16, 31, 32, 37, 62, 64, 74, 124, 128, 148, 248, 256, 296, 401, 496, 592, 802, 992, 1147, 1184, 1604, 1984, 2294, 2368, 3208, 3968, 4588, 4736, 6416, 7936, 9176, 9472, 12431, 12832, 14837, 18352, 24862, 25664, 29674, 36704, 49724, 51328, 59348, 73408, 99448, 102656, 118696, 146816, 198896, 237392, 293632, 397792, 459947, 474784, 795584, 919894, 949568, 1591168, 1839788, 1899136, 3182336, 3679576, 3798272, 7359152, 14718304, 29436608, 58873216, 117746432]

約数ペア:

[(1, 117746432), (2, 58873216), (4, 29436608), (8, 14718304), (16, 7359152), (31, 3798272), (32, 3679576), (37, 3182336), (62, 1899136), (64, 1839788), (74, 1591168), (124, 949568), (128, 919894), (148, 795584), (248, 474784), (256, 459947), (296, 397792), (401, 293632), (496, 237392), (592, 198896), (802, 146816), (992, 118696), (1147, 102656), (1184, 99448), (1604, 73408), (1984, 59348), (2294, 51328), (2368, 49724), (3208, 36704), (3968, 29674), (4588, 25664), (4736, 24862), (6416, 18352), (7936, 14837), (9176, 12832), (9472, 12431)]