804923980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:492

約数の個数: 144

約数和(自身を含む): 2091398400

約数和(自身を除く): 1286474420

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 139, 140, 190, 196, 245, 266, 278, 311, 380, 490, 532, 556, 622, 665, 695, 931, 973, 980, 1244, 1330, 1390, 1555, 1862, 1946, 2177, 2641, 2660, 2780, 3110, 3724, 3892, 4354, 4655, 4865, 5282, 5909, 6220, 6811, 8708, 9310, 9730, 10564, 10885, 11818, 13205, 13622, 15239, 18487, 18620, 19460, 21770, 23636, 26410, 27244, 29545, 30478, 34055, 36974, 41363, 43229, 43540, 52820, 59090, 60956, 68110, 73948, 76195, 82726, 86458, 92435, 118180, 129409, 136220, 152390, 165452, 172916, 184870, 206815, 216145, 258818, 289541, 302603, 304780, 369740, 413630, 432290, 517636, 579082, 605206, 647045, 821351, 827260, 864580, 1158164, 1210412, 1294090, 1447705, 1513015, 1642702, 2118221, 2588180, 2895410, 3026030, 3285404, 4106755, 4236442, 5749457, 5790820, 6052060, 8213510, 8472884, 10591105, 11498914, 16427020, 21182210, 22997828, 28747285, 40246199, 42364420, 57494570, 80492398, 114989140, 160984796, 201230995, 402461990, 804923980]

約数ペア:

[(1, 804923980), (2, 402461990), (4, 201230995), (5, 160984796), (7, 114989140), (10, 80492398), (14, 57494570), (19, 42364420), (20, 40246199), (28, 28747285), (35, 22997828), (38, 21182210), (49, 16427020), (70, 11498914), (76, 10591105), (95, 8472884), (98, 8213510), (133, 6052060), (139, 5790820), (140, 5749457), (190, 4236442), (196, 4106755), (245, 3285404), (266, 3026030), (278, 2895410), (311, 2588180), (380, 2118221), (490, 1642702), (532, 1513015), (556, 1447705), (622, 1294090), (665, 1210412), (695, 1158164), (931, 864580), (973, 827260), (980, 821351), (1244, 647045), (1330, 605206), (1390, 579082), (1555, 517636), (1862, 432290), (1946, 413630), (2177, 369740), (2641, 304780), (2660, 302603), (2780, 289541), (3110, 258818), (3724, 216145), (3892, 206815), (4354, 184870), (4655, 172916), (4865, 165452), (5282, 152390), (5909, 136220), (6220, 129409), (6811, 118180), (8708, 92435), (9310, 86458), (9730, 82726), (10564, 76195), (10885, 73948), (11818, 68110), (13205, 60956), (13622, 59090), (15239, 52820), (18487, 43540), (18620, 43229), (19460, 41363), (21770, 36974), (23636, 34055), (26410, 30478), (27244, 29545)]