20161593880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{162751}}^1$

素因数の和:162944

約数の個数: 64

約数和(自身を含む): 48044390400

約数和(自身を除く): 27882796520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 163, 190, 326, 380, 652, 760, 815, 1304, 1630, 3097, 3260, 6194, 6520, 12388, 15485, 24776, 30970, 61940, 123880, 162751, 325502, 651004, 813755, 1302008, 1627510, 3092269, 3255020, 6184538, 6510040, 12369076, 15461345, 24738152, 26528413, 30922690, 53056826, 61845380, 106113652, 123690760, 132642065, 212227304, 265284130, 504039847, 530568260, 1008079694, 1061136520, 2016159388, 2520199235, 4032318776, 5040398470, 10080796940, 20161593880]

約数ペア:

[(1, 20161593880), (2, 10080796940), (4, 5040398470), (5, 4032318776), (8, 2520199235), (10, 2016159388), (19, 1061136520), (20, 1008079694), (38, 530568260), (40, 504039847), (76, 265284130), (95, 212227304), (152, 132642065), (163, 123690760), (190, 106113652), (326, 61845380), (380, 53056826), (652, 30922690), (760, 26528413), (815, 24738152), (1304, 15461345), (1630, 12369076), (3097, 6510040), (3260, 6184538), (6194, 3255020), (6520, 3092269), (12388, 1627510), (15485, 1302008), (24776, 813755), (30970, 651004), (61940, 325502), (123880, 162751)]