21343228

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{499}}^1$

素因数の和:574

約数の個数: 36

約数和(自身を含む): 40831000

約数和(自身を除く): 19487772

約数列:

[1, 2, 4, 17, 34, 37, 68, 74, 148, 289, 499, 578, 629, 998, 1156, 1258, 1996, 2516, 8483, 10693, 16966, 18463, 21386, 33932, 36926, 42772, 73852, 144211, 288422, 313871, 576844, 627742, 1255484, 5335807, 10671614, 21343228]

約数ペア:

[(1, 21343228), (2, 10671614), (4, 5335807), (17, 1255484), (34, 627742), (37, 576844), (68, 313871), (74, 288422), (148, 144211), (289, 73852), (499, 42772), (578, 36926), (629, 33932), (998, 21386), (1156, 18463), (1258, 16966), (1996, 10693), (2516, 8483)]