1640348280

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79939}}^1$

素因数の和:79978

約数の個数: 128

約数和(自身を含む): 5755680000

約数和(自身を除く): 4115331720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 90, 95, 108, 114, 120, 135, 152, 171, 180, 190, 216, 228, 270, 285, 342, 360, 380, 456, 513, 540, 570, 684, 760, 855, 1026, 1080, 1140, 1368, 1710, 2052, 2280, 2565, 3420, 4104, 5130, 6840, 10260, 20520, 79939, 159878, 239817, 319756, 399695, 479634, 639512, 719451, 799390, 959268, 1199085, 1438902, 1518841, 1598780, 1918536, 2158353, 2398170, 2877804, 3037682, 3197560, 3597255, 4316706, 4556523, 4796340, 5755608, 6075364, 7194510, 7594205, 8633412, 9113046, 9592680, 10791765, 12150728, 13669569, 14389020, 15188410, 17266824, 18226092, 21583530, 22782615, 27339138, 28778040, 30376820, 36452184, 41008707, 43167060, 45565230, 54678276, 60753640, 68347845, 82017414, 86334120, 91130460, 109356552, 136695690, 164034828, 182260920, 205043535, 273391380, 328069656, 410087070, 546782760, 820174140, 1640348280]

約数ペア:

[(1, 1640348280), (2, 820174140), (3, 546782760), (4, 410087070), (5, 328069656), (6, 273391380), (8, 205043535), (9, 182260920), (10, 164034828), (12, 136695690), (15, 109356552), (18, 91130460), (19, 86334120), (20, 82017414), (24, 68347845), (27, 60753640), (30, 54678276), (36, 45565230), (38, 43167060), (40, 41008707), (45, 36452184), (54, 30376820), (57, 28778040), (60, 27339138), (72, 22782615), (76, 21583530), (90, 18226092), (95, 17266824), (108, 15188410), (114, 14389020), (120, 13669569), (135, 12150728), (152, 10791765), (171, 9592680), (180, 9113046), (190, 8633412), (216, 7594205), (228, 7194510), (270, 6075364), (285, 5755608), (342, 4796340), (360, 4556523), (380, 4316706), (456, 3597255), (513, 3197560), (540, 3037682), (570, 2877804), (684, 2398170), (760, 2158353), (855, 1918536), (1026, 1598780), (1080, 1518841), (1140, 1438902), (1368, 1199085), (1710, 959268), (2052, 799390), (2280, 719451), (2565, 639512), (3420, 479634), (4104, 399695), (5130, 319756), (6840, 239817), (10260, 159878), (20520, 79939)]