15340040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:270

約数の個数: 64

約数和(自身を含む): 36288000

約数和(自身を除く): 20947960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 89, 124, 139, 155, 178, 248, 278, 310, 356, 445, 556, 620, 695, 712, 890, 1112, 1240, 1390, 1780, 2759, 2780, 3560, 4309, 5518, 5560, 8618, 11036, 12371, 13795, 17236, 21545, 22072, 24742, 27590, 34472, 43090, 49484, 55180, 61855, 86180, 98968, 110360, 123710, 172360, 247420, 383501, 494840, 767002, 1534004, 1917505, 3068008, 3835010, 7670020, 15340040]

約数ペア:

[(1, 15340040), (2, 7670020), (4, 3835010), (5, 3068008), (8, 1917505), (10, 1534004), (20, 767002), (31, 494840), (40, 383501), (62, 247420), (89, 172360), (124, 123710), (139, 110360), (155, 98968), (178, 86180), (248, 61855), (278, 55180), (310, 49484), (356, 43090), (445, 34472), (556, 27590), (620, 24742), (695, 22072), (712, 21545), (890, 17236), (1112, 13795), (1240, 12371), (1390, 11036), (1780, 8618), (2759, 5560), (2780, 5518), (3560, 4309)]