421957120

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:476

約数の個数: 160

約数和(自身を含む): 1127427840

約数和(自身を除く): 705470720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 403, 409, 416, 496, 512, 520, 620, 640, 806, 818, 832, 992, 1040, 1240, 1280, 1612, 1636, 1664, 1984, 2015, 2045, 2080, 2480, 2560, 3224, 3272, 3328, 3968, 4030, 4090, 4160, 4960, 5317, 6448, 6544, 6656, 7936, 8060, 8180, 8320, 9920, 10634, 12679, 12896, 13088, 15872, 16120, 16360, 16640, 19840, 21268, 25358, 25792, 26176, 26585, 32240, 32720, 33280, 39680, 42536, 50716, 51584, 52352, 53170, 63395, 64480, 65440, 79360, 85072, 101432, 103168, 104704, 106340, 126790, 128960, 130880, 164827, 170144, 202864, 206336, 209408, 212680, 253580, 257920, 261760, 329654, 340288, 405728, 425360, 507160, 515840, 523520, 659308, 680576, 811456, 824135, 850720, 1014320, 1031680, 1047040, 1318616, 1361152, 1622912, 1648270, 1701440, 2028640, 2637232, 2722304, 3245824, 3296540, 3402880, 4057280, 5274464, 6491648, 6593080, 6805760, 8114560, 10548928, 13186160, 13611520, 16229120, 21097856, 26372320, 32458240, 42195712, 52744640, 84391424, 105489280, 210978560, 421957120]

約数ペア:

[(1, 421957120), (2, 210978560), (4, 105489280), (5, 84391424), (8, 52744640), (10, 42195712), (13, 32458240), (16, 26372320), (20, 21097856), (26, 16229120), (31, 13611520), (32, 13186160), (40, 10548928), (52, 8114560), (62, 6805760), (64, 6593080), (65, 6491648), (80, 5274464), (104, 4057280), (124, 3402880), (128, 3296540), (130, 3245824), (155, 2722304), (160, 2637232), (208, 2028640), (248, 1701440), (256, 1648270), (260, 1622912), (310, 1361152), (320, 1318616), (403, 1047040), (409, 1031680), (416, 1014320), (496, 850720), (512, 824135), (520, 811456), (620, 680576), (640, 659308), (806, 523520), (818, 515840), (832, 507160), (992, 425360), (1040, 405728), (1240, 340288), (1280, 329654), (1612, 261760), (1636, 257920), (1664, 253580), (1984, 212680), (2015, 209408), (2045, 206336), (2080, 202864), (2480, 170144), (2560, 164827), (3224, 130880), (3272, 128960), (3328, 126790), (3968, 106340), (4030, 104704), (4090, 103168), (4160, 101432), (4960, 85072), (5317, 79360), (6448, 65440), (6544, 64480), (6656, 63395), (7936, 53170), (8060, 52352), (8180, 51584), (8320, 50716), (9920, 42536), (10634, 39680), (12679, 33280), (12896, 32720), (13088, 32240), (15872, 26585), (16120, 26176), (16360, 25792), (16640, 25358), (19840, 21268)]