168521680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:281

約数の個数: 120

約数和(自身を含む): 429635448

約数和(自身を除く): 261113768

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 37, 40, 68, 74, 80, 85, 136, 148, 170, 185, 197, 272, 289, 296, 340, 370, 394, 578, 592, 629, 680, 740, 788, 985, 1156, 1258, 1360, 1445, 1480, 1576, 1970, 2312, 2516, 2890, 2960, 3145, 3152, 3349, 3940, 4624, 5032, 5780, 6290, 6698, 7289, 7880, 10064, 10693, 11560, 12580, 13396, 14578, 15760, 16745, 21386, 23120, 25160, 26792, 29156, 33490, 36445, 42772, 50320, 53465, 53584, 56933, 58312, 66980, 72890, 85544, 106930, 113866, 116624, 123913, 133960, 145780, 171088, 213860, 227732, 247826, 267920, 284665, 291560, 427720, 455464, 495652, 569330, 583120, 619565, 855440, 910928, 991304, 1138660, 1239130, 1982608, 2106521, 2277320, 2478260, 4213042, 4554640, 4956520, 8426084, 9913040, 10532605, 16852168, 21065210, 33704336, 42130420, 84260840, 168521680]

約数ペア:

[(1, 168521680), (2, 84260840), (4, 42130420), (5, 33704336), (8, 21065210), (10, 16852168), (16, 10532605), (17, 9913040), (20, 8426084), (34, 4956520), (37, 4554640), (40, 4213042), (68, 2478260), (74, 2277320), (80, 2106521), (85, 1982608), (136, 1239130), (148, 1138660), (170, 991304), (185, 910928), (197, 855440), (272, 619565), (289, 583120), (296, 569330), (340, 495652), (370, 455464), (394, 427720), (578, 291560), (592, 284665), (629, 267920), (680, 247826), (740, 227732), (788, 213860), (985, 171088), (1156, 145780), (1258, 133960), (1360, 123913), (1445, 116624), (1480, 113866), (1576, 106930), (1970, 85544), (2312, 72890), (2516, 66980), (2890, 58312), (2960, 56933), (3145, 53584), (3152, 53465), (3349, 50320), (3940, 42772), (4624, 36445), (5032, 33490), (5780, 29156), (6290, 26792), (6698, 25160), (7289, 23120), (7880, 21386), (10064, 16745), (10693, 15760), (11560, 14578), (12580, 13396)]