209451690

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{110821}}^1$

素因数の和:110844

約数の個数: 64

約数和(自身を含む): 638334720

約数和(自身を除く): 428883030

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 110821, 221642, 332463, 554105, 664926, 775747, 997389, 1108210, 1551494, 1662315, 1994778, 2327241, 2992167, 3324630, 3878735, 4654482, 4986945, 5984334, 6981723, 7757470, 9973890, 11636205, 13963446, 14960835, 20945169, 23272410, 29921670, 34908615, 41890338, 69817230, 104725845, 209451690]

約数ペア:

[(1, 209451690), (2, 104725845), (3, 69817230), (5, 41890338), (6, 34908615), (7, 29921670), (9, 23272410), (10, 20945169), (14, 14960835), (15, 13963446), (18, 11636205), (21, 9973890), (27, 7757470), (30, 6981723), (35, 5984334), (42, 4986945), (45, 4654482), (54, 3878735), (63, 3324630), (70, 2992167), (90, 2327241), (105, 1994778), (126, 1662315), (135, 1551494), (189, 1108210), (210, 997389), (270, 775747), (315, 664926), (378, 554105), (630, 332463), (945, 221642), (1890, 110821)]