19664612

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 39529728

約数和(自身を除く): 19865116

約数列:

[1, 2, 4, 11, 22, 37, 44, 47, 74, 94, 148, 188, 257, 407, 514, 517, 814, 1028, 1034, 1628, 1739, 2068, 2827, 3478, 5654, 6956, 9509, 11308, 12079, 19018, 19129, 24158, 38036, 38258, 48316, 76516, 104599, 132869, 209198, 265738, 418396, 446923, 531476, 893846, 1787692, 4916153, 9832306, 19664612]

約数ペア:

[(1, 19664612), (2, 9832306), (4, 4916153), (11, 1787692), (22, 893846), (37, 531476), (44, 446923), (47, 418396), (74, 265738), (94, 209198), (148, 132869), (188, 104599), (257, 76516), (407, 48316), (514, 38258), (517, 38036), (814, 24158), (1028, 19129), (1034, 19018), (1628, 12079), (1739, 11308), (2068, 9509), (2827, 6956), (3478, 5654)]