20875320

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{379}}^1$

素因数の和:419

約数の個数: 160

約数和(自身を含む): 74487600

約数和(自身を除く): 53612280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 27, 30, 34, 36, 40, 45, 51, 54, 60, 68, 72, 81, 85, 90, 102, 108, 120, 135, 136, 153, 162, 170, 180, 204, 216, 255, 270, 306, 324, 340, 360, 379, 405, 408, 459, 510, 540, 612, 648, 680, 758, 765, 810, 918, 1020, 1080, 1137, 1224, 1377, 1516, 1530, 1620, 1836, 1895, 2040, 2274, 2295, 2754, 3032, 3060, 3240, 3411, 3672, 3790, 4548, 4590, 5508, 5685, 6120, 6443, 6822, 6885, 7580, 9096, 9180, 10233, 11016, 11370, 12886, 13644, 13770, 15160, 17055, 18360, 19329, 20466, 22740, 25772, 27288, 27540, 30699, 32215, 34110, 38658, 40932, 45480, 51165, 51544, 55080, 57987, 61398, 64430, 68220, 77316, 81864, 96645, 102330, 115974, 122796, 128860, 136440, 153495, 154632, 173961, 193290, 204660, 231948, 245592, 257720, 289935, 306990, 347922, 386580, 409320, 463896, 521883, 579870, 613980, 695844, 773160, 869805, 1043766, 1159740, 1227960, 1391688, 1739610, 2087532, 2319480, 2609415, 3479220, 4175064, 5218830, 6958440, 10437660, 20875320]

約数ペア:

[(1, 20875320), (2, 10437660), (3, 6958440), (4, 5218830), (5, 4175064), (6, 3479220), (8, 2609415), (9, 2319480), (10, 2087532), (12, 1739610), (15, 1391688), (17, 1227960), (18, 1159740), (20, 1043766), (24, 869805), (27, 773160), (30, 695844), (34, 613980), (36, 579870), (40, 521883), (45, 463896), (51, 409320), (54, 386580), (60, 347922), (68, 306990), (72, 289935), (81, 257720), (85, 245592), (90, 231948), (102, 204660), (108, 193290), (120, 173961), (135, 154632), (136, 153495), (153, 136440), (162, 128860), (170, 122796), (180, 115974), (204, 102330), (216, 96645), (255, 81864), (270, 77316), (306, 68220), (324, 64430), (340, 61398), (360, 57987), (379, 55080), (405, 51544), (408, 51165), (459, 45480), (510, 40932), (540, 38658), (612, 34110), (648, 32215), (680, 30699), (758, 27540), (765, 27288), (810, 25772), (918, 22740), (1020, 20466), (1080, 19329), (1137, 18360), (1224, 17055), (1377, 15160), (1516, 13770), (1530, 13644), (1620, 12886), (1836, 11370), (1895, 11016), (2040, 10233), (2274, 9180), (2295, 9096), (2754, 7580), (3032, 6885), (3060, 6822), (3240, 6443), (3411, 6120), (3672, 5685), (3790, 5508), (4548, 4590)]