20672640

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:159

約数の個数: 192

約数和(自身を含む): 74070360

約数和(自身を除く): 53397720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 37, 40, 45, 48, 60, 64, 72, 74, 80, 90, 96, 97, 111, 120, 128, 144, 148, 160, 180, 185, 192, 194, 222, 240, 288, 291, 296, 320, 333, 360, 370, 384, 388, 444, 480, 485, 555, 576, 582, 592, 640, 666, 720, 740, 776, 873, 888, 960, 970, 1110, 1152, 1164, 1184, 1332, 1440, 1455, 1480, 1552, 1665, 1746, 1776, 1920, 1940, 2220, 2328, 2368, 2664, 2880, 2910, 2960, 3104, 3330, 3492, 3552, 3589, 3880, 4365, 4440, 4656, 4736, 5328, 5760, 5820, 5920, 6208, 6660, 6984, 7104, 7178, 7760, 8730, 8880, 9312, 10656, 10767, 11640, 11840, 12416, 13320, 13968, 14208, 14356, 15520, 17460, 17760, 17945, 18624, 21312, 21534, 23280, 23680, 26640, 27936, 28712, 31040, 32301, 34920, 35520, 35890, 37248, 42624, 43068, 46560, 53280, 53835, 55872, 57424, 62080, 64602, 69840, 71040, 71780, 86136, 93120, 106560, 107670, 111744, 114848, 129204, 139680, 143560, 161505, 172272, 186240, 213120, 215340, 229696, 258408, 279360, 287120, 323010, 344544, 430680, 459392, 516816, 558720, 574240, 646020, 689088, 861360, 1033632, 1148480, 1292040, 1378176, 1722720, 2067264, 2296960, 2584080, 3445440, 4134528, 5168160, 6890880, 10336320, 20672640]

約数ペア:

[(1, 20672640), (2, 10336320), (3, 6890880), (4, 5168160), (5, 4134528), (6, 3445440), (8, 2584080), (9, 2296960), (10, 2067264), (12, 1722720), (15, 1378176), (16, 1292040), (18, 1148480), (20, 1033632), (24, 861360), (30, 689088), (32, 646020), (36, 574240), (37, 558720), (40, 516816), (45, 459392), (48, 430680), (60, 344544), (64, 323010), (72, 287120), (74, 279360), (80, 258408), (90, 229696), (96, 215340), (97, 213120), (111, 186240), (120, 172272), (128, 161505), (144, 143560), (148, 139680), (160, 129204), (180, 114848), (185, 111744), (192, 107670), (194, 106560), (222, 93120), (240, 86136), (288, 71780), (291, 71040), (296, 69840), (320, 64602), (333, 62080), (360, 57424), (370, 55872), (384, 53835), (388, 53280), (444, 46560), (480, 43068), (485, 42624), (555, 37248), (576, 35890), (582, 35520), (592, 34920), (640, 32301), (666, 31040), (720, 28712), (740, 27936), (776, 26640), (873, 23680), (888, 23280), (960, 21534), (970, 21312), (1110, 18624), (1152, 17945), (1164, 17760), (1184, 17460), (1332, 15520), (1440, 14356), (1455, 14208), (1480, 13968), (1552, 13320), (1665, 12416), (1746, 11840), (1776, 11640), (1920, 10767), (1940, 10656), (2220, 9312), (2328, 8880), (2368, 8730), (2664, 7760), (2880, 7178), (2910, 7104), (2960, 6984), (3104, 6660), (3330, 6208), (3492, 5920), (3552, 5820), (3589, 5760), (3880, 5328), (4365, 4736), (4440, 4656)]