19520488

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 42653520

約数和(自身を除く): 23133032

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 61, 68, 104, 122, 136, 181, 221, 244, 362, 442, 488, 724, 793, 884, 1037, 1448, 1586, 1768, 2074, 2353, 3077, 3172, 4148, 4706, 6154, 6344, 8296, 9412, 11041, 12308, 13481, 18824, 22082, 24616, 26962, 40001, 44164, 53924, 80002, 88328, 107848, 143533, 160004, 187697, 287066, 320008, 375394, 574132, 750788, 1148264, 1501576, 2440061, 4880122, 9760244, 19520488]

約数ペア:

[(1, 19520488), (2, 9760244), (4, 4880122), (8, 2440061), (13, 1501576), (17, 1148264), (26, 750788), (34, 574132), (52, 375394), (61, 320008), (68, 287066), (104, 187697), (122, 160004), (136, 143533), (181, 107848), (221, 88328), (244, 80002), (362, 53924), (442, 44164), (488, 40001), (724, 26962), (793, 24616), (884, 22082), (1037, 18824), (1448, 13481), (1586, 12308), (1768, 11041), (2074, 9412), (2353, 8296), (3077, 6344), (3172, 6154), (4148, 4706)]