31890040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8761}}^1$

素因数の和:8792

約数の個数: 64

約数和(自身を含む): 88320960

約数和(自身を除く): 56430920

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 8761, 17522, 35044, 43805, 61327, 70088, 87610, 113893, 122654, 175220, 227786, 245308, 306635, 350440, 455572, 490616, 569465, 613270, 797251, 911144, 1138930, 1226540, 1594502, 2277860, 2453080, 3189004, 3986255, 4555720, 6378008, 7972510, 15945020, 31890040]

約数ペア:

[(1, 31890040), (2, 15945020), (4, 7972510), (5, 6378008), (7, 4555720), (8, 3986255), (10, 3189004), (13, 2453080), (14, 2277860), (20, 1594502), (26, 1226540), (28, 1138930), (35, 911144), (40, 797251), (52, 613270), (56, 569465), (65, 490616), (70, 455572), (91, 350440), (104, 306635), (130, 245308), (140, 227786), (182, 175220), (260, 122654), (280, 113893), (364, 87610), (455, 70088), (520, 61327), (728, 43805), (910, 35044), (1820, 17522), (3640, 8761)]