31281840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1889}}^1$

素因数の和:1931

約数の個数: 120

約数和(自身を含む): 109680480

約数和(自身を除く): 78398640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 115, 120, 138, 144, 180, 184, 207, 230, 240, 276, 345, 360, 368, 414, 460, 552, 690, 720, 828, 920, 1035, 1104, 1380, 1656, 1840, 1889, 2070, 2760, 3312, 3778, 4140, 5520, 5667, 7556, 8280, 9445, 11334, 15112, 16560, 17001, 18890, 22668, 28335, 30224, 34002, 37780, 43447, 45336, 56670, 68004, 75560, 85005, 86894, 90672, 113340, 130341, 136008, 151120, 170010, 173788, 217235, 226680, 260682, 272016, 340020, 347576, 391023, 434470, 453360, 521364, 651705, 680040, 695152, 782046, 868940, 1042728, 1303410, 1360080, 1564092, 1737880, 1955115, 2085456, 2606820, 3128184, 3475760, 3910230, 5213640, 6256368, 7820460, 10427280, 15640920, 31281840]

約数ペア:

[(1, 31281840), (2, 15640920), (3, 10427280), (4, 7820460), (5, 6256368), (6, 5213640), (8, 3910230), (9, 3475760), (10, 3128184), (12, 2606820), (15, 2085456), (16, 1955115), (18, 1737880), (20, 1564092), (23, 1360080), (24, 1303410), (30, 1042728), (36, 868940), (40, 782046), (45, 695152), (46, 680040), (48, 651705), (60, 521364), (69, 453360), (72, 434470), (80, 391023), (90, 347576), (92, 340020), (115, 272016), (120, 260682), (138, 226680), (144, 217235), (180, 173788), (184, 170010), (207, 151120), (230, 136008), (240, 130341), (276, 113340), (345, 90672), (360, 86894), (368, 85005), (414, 75560), (460, 68004), (552, 56670), (690, 45336), (720, 43447), (828, 37780), (920, 34002), (1035, 30224), (1104, 28335), (1380, 22668), (1656, 18890), (1840, 17001), (1889, 16560), (2070, 15112), (2760, 11334), (3312, 9445), (3778, 8280), (4140, 7556), (5520, 5667)]