31990192

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:230

約数の個数: 80

約数和(自身を含む): 72182880

約数和(自身を除く): 40192688

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 83, 104, 109, 136, 166, 208, 218, 221, 272, 332, 436, 442, 664, 872, 884, 1079, 1328, 1411, 1417, 1744, 1768, 1853, 2158, 2822, 2834, 3536, 3706, 4316, 5644, 5668, 7412, 8632, 9047, 11288, 11336, 14824, 17264, 18094, 18343, 22576, 22672, 24089, 29648, 36188, 36686, 48178, 72376, 73372, 96356, 117611, 144752, 146744, 153799, 192712, 235222, 293488, 307598, 385424, 470444, 615196, 940888, 1230392, 1881776, 1999387, 2460784, 3998774, 7997548, 15995096, 31990192]

約数ペア:

[(1, 31990192), (2, 15995096), (4, 7997548), (8, 3998774), (13, 2460784), (16, 1999387), (17, 1881776), (26, 1230392), (34, 940888), (52, 615196), (68, 470444), (83, 385424), (104, 307598), (109, 293488), (136, 235222), (166, 192712), (208, 153799), (218, 146744), (221, 144752), (272, 117611), (332, 96356), (436, 73372), (442, 72376), (664, 48178), (872, 36686), (884, 36188), (1079, 29648), (1328, 24089), (1411, 22672), (1417, 22576), (1744, 18343), (1768, 18094), (1853, 17264), (2158, 14824), (2822, 11336), (2834, 11288), (3536, 9047), (3706, 8632), (4316, 7412), (5644, 5668)]