19811280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:173

約数の個数: 160

約数和(自身を含む): 66495744

約数和(自身を除く): 46684464

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 37, 40, 46, 48, 60, 69, 74, 80, 92, 97, 111, 115, 120, 138, 148, 184, 185, 194, 222, 230, 240, 276, 291, 296, 345, 368, 370, 388, 444, 460, 485, 552, 555, 582, 592, 690, 740, 776, 851, 888, 920, 970, 1104, 1110, 1164, 1380, 1455, 1480, 1552, 1702, 1776, 1840, 1940, 2220, 2231, 2328, 2553, 2760, 2910, 2960, 3404, 3589, 3880, 4255, 4440, 4462, 4656, 5106, 5520, 5820, 6693, 6808, 7178, 7760, 8510, 8880, 8924, 10212, 10767, 11155, 11640, 12765, 13386, 13616, 14356, 17020, 17848, 17945, 20424, 21534, 22310, 23280, 25530, 26772, 28712, 33465, 34040, 35696, 35890, 40848, 43068, 44620, 51060, 53544, 53835, 57424, 66930, 68080, 71780, 82547, 86136, 89240, 102120, 107088, 107670, 133860, 143560, 165094, 172272, 178480, 204240, 215340, 247641, 267720, 287120, 330188, 412735, 430680, 495282, 535440, 660376, 825470, 861360, 990564, 1238205, 1320752, 1650940, 1981128, 2476410, 3301880, 3962256, 4952820, 6603760, 9905640, 19811280]

約数ペア:

[(1, 19811280), (2, 9905640), (3, 6603760), (4, 4952820), (5, 3962256), (6, 3301880), (8, 2476410), (10, 1981128), (12, 1650940), (15, 1320752), (16, 1238205), (20, 990564), (23, 861360), (24, 825470), (30, 660376), (37, 535440), (40, 495282), (46, 430680), (48, 412735), (60, 330188), (69, 287120), (74, 267720), (80, 247641), (92, 215340), (97, 204240), (111, 178480), (115, 172272), (120, 165094), (138, 143560), (148, 133860), (184, 107670), (185, 107088), (194, 102120), (222, 89240), (230, 86136), (240, 82547), (276, 71780), (291, 68080), (296, 66930), (345, 57424), (368, 53835), (370, 53544), (388, 51060), (444, 44620), (460, 43068), (485, 40848), (552, 35890), (555, 35696), (582, 34040), (592, 33465), (690, 28712), (740, 26772), (776, 25530), (851, 23280), (888, 22310), (920, 21534), (970, 20424), (1104, 17945), (1110, 17848), (1164, 17020), (1380, 14356), (1455, 13616), (1480, 13386), (1552, 12765), (1702, 11640), (1776, 11155), (1840, 10767), (1940, 10212), (2220, 8924), (2231, 8880), (2328, 8510), (2553, 7760), (2760, 7178), (2910, 6808), (2960, 6693), (3404, 5820), (3589, 5520), (3880, 5106), (4255, 4656), (4440, 4462)]