1538940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1973}}^1$

素因数の和:1998

約数の個数: 48

約数和(自身を含む): 4642848

約数和(自身を除く): 3103908

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 1973, 3946, 5919, 7892, 9865, 11838, 19730, 23676, 25649, 29595, 39460, 51298, 59190, 76947, 102596, 118380, 128245, 153894, 256490, 307788, 384735, 512980, 769470, 1538940]

約数ペア:

[(1, 1538940), (2, 769470), (3, 512980), (4, 384735), (5, 307788), (6, 256490), (10, 153894), (12, 128245), (13, 118380), (15, 102596), (20, 76947), (26, 59190), (30, 51298), (39, 39460), (52, 29595), (60, 25649), (65, 23676), (78, 19730), (130, 11838), (156, 9865), (195, 7892), (260, 5919), (390, 3946), (780, 1973)]