19870515

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:230

約数の個数: 80

約数和(自身を含む): 41910528

約数和(自身を除く): 22040013

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 43, 45, 63, 81, 105, 129, 135, 163, 189, 215, 301, 315, 387, 405, 489, 567, 645, 815, 903, 945, 1141, 1161, 1467, 1505, 1935, 2445, 2709, 2835, 3423, 3483, 4401, 4515, 5705, 5805, 7009, 7335, 8127, 10269, 13203, 13545, 17115, 17415, 21027, 22005, 24381, 30807, 35045, 40635, 49063, 51345, 63081, 66015, 92421, 105135, 121905, 147189, 154035, 189243, 245315, 315405, 441567, 462105, 567729, 735945, 946215, 1324701, 2207835, 2838645, 3974103, 6623505, 19870515]

約数ペア:

[(1, 19870515), (3, 6623505), (5, 3974103), (7, 2838645), (9, 2207835), (15, 1324701), (21, 946215), (27, 735945), (35, 567729), (43, 462105), (45, 441567), (63, 315405), (81, 245315), (105, 189243), (129, 154035), (135, 147189), (163, 121905), (189, 105135), (215, 92421), (301, 66015), (315, 63081), (387, 51345), (405, 49063), (489, 40635), (567, 35045), (645, 30807), (815, 24381), (903, 22005), (945, 21027), (1141, 17415), (1161, 17115), (1467, 13545), (1505, 13203), (1935, 10269), (2445, 8127), (2709, 7335), (2835, 7009), (3423, 5805), (3483, 5705), (4401, 4515)]