19806456

素因数分解:

$2^3\times 3^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:316

約数の個数: 64

約数和(自身を含む): 51246720

約数和(自身を除く): 31440264

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 61, 83, 122, 163, 166, 183, 244, 249, 326, 332, 366, 488, 489, 498, 652, 664, 732, 978, 996, 1304, 1464, 1956, 1992, 3912, 5063, 9943, 10126, 13529, 15189, 19886, 20252, 27058, 29829, 30378, 39772, 40504, 40587, 54116, 59658, 60756, 79544, 81174, 108232, 119316, 121512, 162348, 238632, 324696, 825269, 1650538, 2475807, 3301076, 4951614, 6602152, 9903228, 19806456]

約数ペア:

[(1, 19806456), (2, 9903228), (3, 6602152), (4, 4951614), (6, 3301076), (8, 2475807), (12, 1650538), (24, 825269), (61, 324696), (83, 238632), (122, 162348), (163, 121512), (166, 119316), (183, 108232), (244, 81174), (249, 79544), (326, 60756), (332, 59658), (366, 54116), (488, 40587), (489, 40504), (498, 39772), (652, 30378), (664, 29829), (732, 27058), (978, 20252), (996, 19886), (1304, 15189), (1464, 13529), (1956, 10126), (1992, 9943), (3912, 5063)]