656180720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{20353}}^1$

素因数の和:20410

約数の個数: 80

約数和(自身を含む): 1696058112

約数和(自身を除く): 1039877392

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 8060, 16120, 20353, 32240, 40706, 81412, 101765, 162824, 203530, 264589, 325648, 407060, 529178, 630943, 814120, 1058356, 1261886, 1322945, 1628240, 2116712, 2523772, 2645890, 3154715, 4233424, 5047544, 5291780, 6309430, 8202259, 10095088, 10583560, 12618860, 16404518, 21167120, 25237720, 32809036, 41011295, 50475440, 65618072, 82022590, 131236144, 164045180, 328090360, 656180720]

約数ペア:

[(1, 656180720), (2, 328090360), (4, 164045180), (5, 131236144), (8, 82022590), (10, 65618072), (13, 50475440), (16, 41011295), (20, 32809036), (26, 25237720), (31, 21167120), (40, 16404518), (52, 12618860), (62, 10583560), (65, 10095088), (80, 8202259), (104, 6309430), (124, 5291780), (130, 5047544), (155, 4233424), (208, 3154715), (248, 2645890), (260, 2523772), (310, 2116712), (403, 1628240), (496, 1322945), (520, 1261886), (620, 1058356), (806, 814120), (1040, 630943), (1240, 529178), (1612, 407060), (2015, 325648), (2480, 264589), (3224, 203530), (4030, 162824), (6448, 101765), (8060, 81412), (16120, 40706), (20353, 32240)]