199420520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:283

約数の個数: 128

約数和(自身を含む): 508032000

約数和(自身を除く): 308611480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 89, 104, 124, 130, 139, 155, 178, 248, 260, 278, 310, 356, 403, 445, 520, 556, 620, 695, 712, 806, 890, 1112, 1157, 1240, 1390, 1612, 1780, 1807, 2015, 2314, 2759, 2780, 3224, 3560, 3614, 4030, 4309, 4628, 5518, 5560, 5785, 7228, 8060, 8618, 9035, 9256, 11036, 11570, 12371, 13795, 14456, 16120, 17236, 18070, 21545, 22072, 23140, 24742, 27590, 34472, 35867, 36140, 43090, 46280, 49484, 55180, 56017, 61855, 71734, 72280, 86180, 98968, 110360, 112034, 123710, 143468, 160823, 172360, 179335, 224068, 247420, 280085, 286936, 321646, 358670, 383501, 448136, 494840, 560170, 643292, 717340, 767002, 804115, 1120340, 1286584, 1434680, 1534004, 1608230, 1917505, 2240680, 3068008, 3216460, 3835010, 4985513, 6432920, 7670020, 9971026, 15340040, 19942052, 24927565, 39884104, 49855130, 99710260, 199420520]

約数ペア:

[(1, 199420520), (2, 99710260), (4, 49855130), (5, 39884104), (8, 24927565), (10, 19942052), (13, 15340040), (20, 9971026), (26, 7670020), (31, 6432920), (40, 4985513), (52, 3835010), (62, 3216460), (65, 3068008), (89, 2240680), (104, 1917505), (124, 1608230), (130, 1534004), (139, 1434680), (155, 1286584), (178, 1120340), (248, 804115), (260, 767002), (278, 717340), (310, 643292), (356, 560170), (403, 494840), (445, 448136), (520, 383501), (556, 358670), (620, 321646), (695, 286936), (712, 280085), (806, 247420), (890, 224068), (1112, 179335), (1157, 172360), (1240, 160823), (1390, 143468), (1612, 123710), (1780, 112034), (1807, 110360), (2015, 98968), (2314, 86180), (2759, 72280), (2780, 71734), (3224, 61855), (3560, 56017), (3614, 55180), (4030, 49484), (4309, 46280), (4628, 43090), (5518, 36140), (5560, 35867), (5785, 34472), (7228, 27590), (8060, 24742), (8618, 23140), (9035, 22072), (9256, 21545), (11036, 18070), (11570, 17236), (12371, 16120), (13795, 14456)]