81484400

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{521}}^1$

素因数の和:579

約数の個数: 120

約数和(自身を含む): 216709344

約数和(自身を除く): 135224944

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 25, 34, 40, 46, 50, 68, 80, 85, 92, 100, 115, 136, 170, 184, 200, 230, 272, 340, 368, 391, 400, 425, 460, 521, 575, 680, 782, 850, 920, 1042, 1150, 1360, 1564, 1700, 1840, 1955, 2084, 2300, 2605, 3128, 3400, 3910, 4168, 4600, 5210, 6256, 6800, 7820, 8336, 8857, 9200, 9775, 10420, 11983, 13025, 15640, 17714, 19550, 20840, 23966, 26050, 31280, 35428, 39100, 41680, 44285, 47932, 52100, 59915, 70856, 78200, 88570, 95864, 104200, 119830, 141712, 156400, 177140, 191728, 203711, 208400, 221425, 239660, 299575, 354280, 407422, 442850, 479320, 599150, 708560, 814844, 885700, 958640, 1018555, 1198300, 1629688, 1771400, 2037110, 2396600, 3259376, 3542800, 4074220, 4793200, 5092775, 8148440, 10185550, 16296880, 20371100, 40742200, 81484400]

約数ペア:

[(1, 81484400), (2, 40742200), (4, 20371100), (5, 16296880), (8, 10185550), (10, 8148440), (16, 5092775), (17, 4793200), (20, 4074220), (23, 3542800), (25, 3259376), (34, 2396600), (40, 2037110), (46, 1771400), (50, 1629688), (68, 1198300), (80, 1018555), (85, 958640), (92, 885700), (100, 814844), (115, 708560), (136, 599150), (170, 479320), (184, 442850), (200, 407422), (230, 354280), (272, 299575), (340, 239660), (368, 221425), (391, 208400), (400, 203711), (425, 191728), (460, 177140), (521, 156400), (575, 141712), (680, 119830), (782, 104200), (850, 95864), (920, 88570), (1042, 78200), (1150, 70856), (1360, 59915), (1564, 52100), (1700, 47932), (1840, 44285), (1955, 41680), (2084, 39100), (2300, 35428), (2605, 31280), (3128, 26050), (3400, 23966), (3910, 20840), (4168, 19550), (4600, 17714), (5210, 15640), (6256, 13025), (6800, 11983), (7820, 10420), (8336, 9775), (8857, 9200)]