406481920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:266

約数の個数: 176

約数和(自身を含む): 1089462528

約数和(自身を除く): 682980608

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, 197, 208, 248, 256, 260, 310, 320, 394, 403, 416, 496, 512, 520, 620, 640, 788, 806, 832, 985, 992, 1024, 1040, 1240, 1280, 1576, 1612, 1664, 1970, 1984, 2015, 2080, 2480, 2560, 2561, 3152, 3224, 3328, 3940, 3968, 4030, 4160, 4960, 5120, 5122, 6107, 6304, 6448, 6656, 7880, 7936, 8060, 8320, 9920, 10244, 12214, 12608, 12805, 12896, 13312, 15760, 15872, 16120, 16640, 19840, 20488, 24428, 25216, 25610, 25792, 30535, 31520, 31744, 32240, 33280, 39680, 40976, 48856, 50432, 51220, 51584, 61070, 63040, 64480, 66560, 79360, 79391, 81952, 97712, 100864, 102440, 103168, 122140, 126080, 128960, 158720, 158782, 163904, 195424, 201728, 204880, 206336, 244280, 252160, 257920, 317564, 327808, 390848, 396955, 409760, 412672, 488560, 504320, 515840, 635128, 655616, 781696, 793910, 819520, 977120, 1008640, 1031680, 1270256, 1311232, 1563392, 1587820, 1639040, 1954240, 2063360, 2540512, 2622464, 3126784, 3175640, 3278080, 3908480, 5081024, 6253568, 6351280, 6556160, 7816960, 10162048, 12702560, 13112320, 15633920, 20324096, 25405120, 31267840, 40648192, 50810240, 81296384, 101620480, 203240960, 406481920]

約数ペア:

[(1, 406481920), (2, 203240960), (4, 101620480), (5, 81296384), (8, 50810240), (10, 40648192), (13, 31267840), (16, 25405120), (20, 20324096), (26, 15633920), (31, 13112320), (32, 12702560), (40, 10162048), (52, 7816960), (62, 6556160), (64, 6351280), (65, 6253568), (80, 5081024), (104, 3908480), (124, 3278080), (128, 3175640), (130, 3126784), (155, 2622464), (160, 2540512), (197, 2063360), (208, 1954240), (248, 1639040), (256, 1587820), (260, 1563392), (310, 1311232), (320, 1270256), (394, 1031680), (403, 1008640), (416, 977120), (496, 819520), (512, 793910), (520, 781696), (620, 655616), (640, 635128), (788, 515840), (806, 504320), (832, 488560), (985, 412672), (992, 409760), (1024, 396955), (1040, 390848), (1240, 327808), (1280, 317564), (1576, 257920), (1612, 252160), (1664, 244280), (1970, 206336), (1984, 204880), (2015, 201728), (2080, 195424), (2480, 163904), (2560, 158782), (2561, 158720), (3152, 128960), (3224, 126080), (3328, 122140), (3940, 103168), (3968, 102440), (4030, 100864), (4160, 97712), (4960, 81952), (5120, 79391), (5122, 79360), (6107, 66560), (6304, 64480), (6448, 63040), (6656, 61070), (7880, 51584), (7936, 51220), (8060, 50432), (8320, 48856), (9920, 40976), (10244, 39680), (12214, 33280), (12608, 32240), (12805, 31744), (12896, 31520), (13312, 30535), (15760, 25792), (15872, 25610), (16120, 25216), (16640, 24428), (19840, 20488)]