42409720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 98366400

約数和(自身を除く): 55956680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 109, 137, 142, 218, 274, 284, 355, 436, 545, 548, 568, 685, 710, 872, 1090, 1096, 1370, 1420, 2180, 2740, 2840, 4360, 5480, 7739, 9727, 14933, 15478, 19454, 29866, 30956, 38695, 38908, 48635, 59732, 61912, 74665, 77390, 77816, 97270, 119464, 149330, 154780, 194540, 298660, 309560, 389080, 597320, 1060243, 2120486, 4240972, 5301215, 8481944, 10602430, 21204860, 42409720]

約数ペア:

[(1, 42409720), (2, 21204860), (4, 10602430), (5, 8481944), (8, 5301215), (10, 4240972), (20, 2120486), (40, 1060243), (71, 597320), (109, 389080), (137, 309560), (142, 298660), (218, 194540), (274, 154780), (284, 149330), (355, 119464), (436, 97270), (545, 77816), (548, 77390), (568, 74665), (685, 61912), (710, 59732), (872, 48635), (1090, 38908), (1096, 38695), (1370, 30956), (1420, 29866), (2180, 19454), (2740, 15478), (2840, 14933), (4360, 9727), (5480, 7739)]