258258520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{433}}^1$

素因数の和:525

約数の個数: 128

約数和(自身を含む): 664957440

約数和(自身を除く): 406698920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 37, 40, 52, 62, 65, 74, 104, 124, 130, 148, 155, 185, 248, 260, 296, 310, 370, 403, 433, 481, 520, 620, 740, 806, 866, 962, 1147, 1240, 1480, 1612, 1732, 1924, 2015, 2165, 2294, 2405, 3224, 3464, 3848, 4030, 4330, 4588, 4810, 5629, 5735, 8060, 8660, 9176, 9620, 11258, 11470, 13423, 14911, 16021, 16120, 17320, 19240, 22516, 22940, 26846, 28145, 29822, 32042, 45032, 45880, 53692, 56290, 59644, 64084, 67115, 74555, 80105, 107384, 112580, 119288, 128168, 134230, 149110, 160210, 174499, 208273, 225160, 268460, 298220, 320420, 348998, 416546, 496651, 536920, 596440, 640840, 697996, 833092, 872495, 993302, 1041365, 1395992, 1666184, 1744990, 1986604, 2082730, 2483255, 3489980, 3973208, 4165460, 4966510, 6456463, 6979960, 8330920, 9933020, 12912926, 19866040, 25825852, 32282315, 51651704, 64564630, 129129260, 258258520]

約数ペア:

[(1, 258258520), (2, 129129260), (4, 64564630), (5, 51651704), (8, 32282315), (10, 25825852), (13, 19866040), (20, 12912926), (26, 9933020), (31, 8330920), (37, 6979960), (40, 6456463), (52, 4966510), (62, 4165460), (65, 3973208), (74, 3489980), (104, 2483255), (124, 2082730), (130, 1986604), (148, 1744990), (155, 1666184), (185, 1395992), (248, 1041365), (260, 993302), (296, 872495), (310, 833092), (370, 697996), (403, 640840), (433, 596440), (481, 536920), (520, 496651), (620, 416546), (740, 348998), (806, 320420), (866, 298220), (962, 268460), (1147, 225160), (1240, 208273), (1480, 174499), (1612, 160210), (1732, 149110), (1924, 134230), (2015, 128168), (2165, 119288), (2294, 112580), (2405, 107384), (3224, 80105), (3464, 74555), (3848, 67115), (4030, 64084), (4330, 59644), (4588, 56290), (4810, 53692), (5629, 45880), (5735, 45032), (8060, 32042), (8660, 29822), (9176, 28145), (9620, 26846), (11258, 22940), (11470, 22516), (13423, 19240), (14911, 17320), (16021, 16120)]