21155888916

素因数分解:

$2^2\times 3^2\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{50387}}^1$

素因数の和:50613

約数の個数: 72

約数和(自身を含む): 54473459040

約数和(自身を除く): 33317570124

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 107, 109, 214, 218, 321, 327, 428, 436, 642, 654, 963, 981, 1284, 1308, 1926, 1962, 3852, 3924, 11663, 23326, 34989, 46652, 50387, 69978, 100774, 104967, 139956, 151161, 201548, 209934, 302322, 419868, 453483, 604644, 906966, 1813932, 5391409, 5492183, 10782818, 10984366, 16174227, 16476549, 21565636, 21968732, 32348454, 32953098, 48522681, 49429647, 64696908, 65906196, 97045362, 98859294, 194090724, 197718588, 587663581, 1175327162, 1762990743, 2350654324, 3525981486, 5288972229, 7051962972, 10577944458, 21155888916]

約数ペア:

[(1, 21155888916), (2, 10577944458), (3, 7051962972), (4, 5288972229), (6, 3525981486), (9, 2350654324), (12, 1762990743), (18, 1175327162), (36, 587663581), (107, 197718588), (109, 194090724), (214, 98859294), (218, 97045362), (321, 65906196), (327, 64696908), (428, 49429647), (436, 48522681), (642, 32953098), (654, 32348454), (963, 21968732), (981, 21565636), (1284, 16476549), (1308, 16174227), (1926, 10984366), (1962, 10782818), (3852, 5492183), (3924, 5391409), (11663, 1813932), (23326, 906966), (34989, 604644), (46652, 453483), (50387, 419868), (69978, 302322), (100774, 209934), (104967, 201548), (139956, 151161)]