20065680

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2$

素因数の和:110

約数の個数: 180

約数和(自身を含む): 72032220

約数和(自身を除く): 51966540

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 31, 36, 40, 45, 48, 58, 60, 62, 72, 80, 87, 90, 93, 116, 120, 124, 144, 145, 155, 174, 180, 186, 232, 240, 248, 261, 279, 290, 310, 348, 360, 372, 435, 464, 465, 496, 522, 558, 580, 620, 696, 720, 744, 870, 899, 930, 961, 1044, 1116, 1160, 1240, 1305, 1392, 1395, 1488, 1740, 1798, 1860, 1922, 2088, 2232, 2320, 2480, 2610, 2697, 2790, 2883, 3480, 3596, 3720, 3844, 4176, 4464, 4495, 4805, 5220, 5394, 5580, 5766, 6960, 7192, 7440, 7688, 8091, 8649, 8990, 9610, 10440, 10788, 11160, 11532, 13485, 14384, 14415, 15376, 16182, 17298, 17980, 19220, 20880, 21576, 22320, 23064, 26970, 27869, 28830, 32364, 34596, 35960, 38440, 40455, 43152, 43245, 46128, 53940, 55738, 57660, 64728, 69192, 71920, 76880, 80910, 83607, 86490, 107880, 111476, 115320, 129456, 138384, 139345, 161820, 167214, 172980, 215760, 222952, 230640, 250821, 278690, 323640, 334428, 345960, 418035, 445904, 501642, 557380, 647280, 668856, 691920, 836070, 1003284, 1114760, 1254105, 1337712, 1672140, 2006568, 2229520, 2508210, 3344280, 4013136, 5016420, 6688560, 10032840, 20065680]

約数ペア:

[(1, 20065680), (2, 10032840), (3, 6688560), (4, 5016420), (5, 4013136), (6, 3344280), (8, 2508210), (9, 2229520), (10, 2006568), (12, 1672140), (15, 1337712), (16, 1254105), (18, 1114760), (20, 1003284), (24, 836070), (29, 691920), (30, 668856), (31, 647280), (36, 557380), (40, 501642), (45, 445904), (48, 418035), (58, 345960), (60, 334428), (62, 323640), (72, 278690), (80, 250821), (87, 230640), (90, 222952), (93, 215760), (116, 172980), (120, 167214), (124, 161820), (144, 139345), (145, 138384), (155, 129456), (174, 115320), (180, 111476), (186, 107880), (232, 86490), (240, 83607), (248, 80910), (261, 76880), (279, 71920), (290, 69192), (310, 64728), (348, 57660), (360, 55738), (372, 53940), (435, 46128), (464, 43245), (465, 43152), (496, 40455), (522, 38440), (558, 35960), (580, 34596), (620, 32364), (696, 28830), (720, 27869), (744, 26970), (870, 23064), (899, 22320), (930, 21576), (961, 20880), (1044, 19220), (1116, 17980), (1160, 17298), (1240, 16182), (1305, 15376), (1392, 14415), (1395, 14384), (1488, 13485), (1740, 11532), (1798, 11160), (1860, 10788), (1922, 10440), (2088, 9610), (2232, 8990), (2320, 8649), (2480, 8091), (2610, 7688), (2697, 7440), (2790, 7192), (2883, 6960), (3480, 5766), (3596, 5580), (3720, 5394), (3844, 5220), (4176, 4805), (4464, 4495)]