13880840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 33534000

約数和(自身を除く): 19653160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 137, 149, 170, 274, 298, 340, 548, 596, 680, 685, 745, 1096, 1192, 1370, 1490, 2329, 2533, 2740, 2980, 4658, 5066, 5480, 5960, 9316, 10132, 11645, 12665, 18632, 20264, 20413, 23290, 25330, 40826, 46580, 50660, 81652, 93160, 101320, 102065, 163304, 204130, 347021, 408260, 694042, 816520, 1388084, 1735105, 2776168, 3470210, 6940420, 13880840]

約数ペア:

[(1, 13880840), (2, 6940420), (4, 3470210), (5, 2776168), (8, 1735105), (10, 1388084), (17, 816520), (20, 694042), (34, 408260), (40, 347021), (68, 204130), (85, 163304), (136, 102065), (137, 101320), (149, 93160), (170, 81652), (274, 50660), (298, 46580), (340, 40826), (548, 25330), (596, 23290), (680, 20413), (685, 20264), (745, 18632), (1096, 12665), (1192, 11645), (1370, 10132), (1490, 9316), (2329, 5960), (2533, 5480), (2740, 5066), (2980, 4658)]