80008040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{3617}}^1$

素因数の和:3714

約数の個数: 64

約数和(自身を含む): 208396800

約数和(自身を除く): 128388760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 395, 553, 632, 790, 1106, 1580, 2212, 2765, 3160, 3617, 4424, 5530, 7234, 11060, 14468, 18085, 22120, 25319, 28936, 36170, 50638, 72340, 101276, 126595, 144680, 202552, 253190, 285743, 506380, 571486, 1012760, 1142972, 1428715, 2000201, 2285944, 2857430, 4000402, 5714860, 8000804, 10001005, 11429720, 16001608, 20002010, 40004020, 80008040]

約数ペア:

[(1, 80008040), (2, 40004020), (4, 20002010), (5, 16001608), (7, 11429720), (8, 10001005), (10, 8000804), (14, 5714860), (20, 4000402), (28, 2857430), (35, 2285944), (40, 2000201), (56, 1428715), (70, 1142972), (79, 1012760), (140, 571486), (158, 506380), (280, 285743), (316, 253190), (395, 202552), (553, 144680), (632, 126595), (790, 101276), (1106, 72340), (1580, 50638), (2212, 36170), (2765, 28936), (3160, 25319), (3617, 22120), (4424, 18085), (5530, 14468), (7234, 11060)]