1261174720

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1931}}^1$

素因数の和:2118

約数の個数: 112

約数和(自身を含む): 3256471008

約数和(自身を除く): 1995296288

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 157, 160, 208, 260, 314, 320, 416, 520, 628, 785, 832, 1040, 1256, 1570, 1931, 2041, 2080, 2512, 3140, 3862, 4082, 4160, 5024, 6280, 7724, 8164, 9655, 10048, 10205, 12560, 15448, 16328, 19310, 20410, 25103, 25120, 30896, 32656, 38620, 40820, 50206, 50240, 61792, 65312, 77240, 81640, 100412, 123584, 125515, 130624, 154480, 163280, 200824, 251030, 303167, 308960, 326560, 401648, 502060, 606334, 617920, 653120, 803296, 1004120, 1212668, 1515835, 1606592, 2008240, 2425336, 3031670, 3941171, 4016480, 4850672, 6063340, 7882342, 8032960, 9701344, 12126680, 15764684, 19402688, 19705855, 24253360, 31529368, 39411710, 48506720, 63058736, 78823420, 97013440, 126117472, 157646840, 252234944, 315293680, 630587360, 1261174720]

約数ペア:

[(1, 1261174720), (2, 630587360), (4, 315293680), (5, 252234944), (8, 157646840), (10, 126117472), (13, 97013440), (16, 78823420), (20, 63058736), (26, 48506720), (32, 39411710), (40, 31529368), (52, 24253360), (64, 19705855), (65, 19402688), (80, 15764684), (104, 12126680), (130, 9701344), (157, 8032960), (160, 7882342), (208, 6063340), (260, 4850672), (314, 4016480), (320, 3941171), (416, 3031670), (520, 2425336), (628, 2008240), (785, 1606592), (832, 1515835), (1040, 1212668), (1256, 1004120), (1570, 803296), (1931, 653120), (2041, 617920), (2080, 606334), (2512, 502060), (3140, 401648), (3862, 326560), (4082, 308960), (4160, 303167), (5024, 251030), (6280, 200824), (7724, 163280), (8164, 154480), (9655, 130624), (10048, 125515), (10205, 123584), (12560, 100412), (15448, 81640), (16328, 77240), (19310, 65312), (20410, 61792), (25103, 50240), (25120, 50206), (30896, 40820), (32656, 38620)]