18101720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4973}}^1$

素因数の和:5004

約数の個数: 64

約数和(自身を含む): 50137920

約数和(自身を除く): 32036200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 4973, 9946, 19892, 24865, 34811, 39784, 49730, 64649, 69622, 99460, 129298, 139244, 174055, 198920, 258596, 278488, 323245, 348110, 452543, 517192, 646490, 696220, 905086, 1292980, 1392440, 1810172, 2262715, 2585960, 3620344, 4525430, 9050860, 18101720]

約数ペア:

[(1, 18101720), (2, 9050860), (4, 4525430), (5, 3620344), (7, 2585960), (8, 2262715), (10, 1810172), (13, 1392440), (14, 1292980), (20, 905086), (26, 696220), (28, 646490), (35, 517192), (40, 452543), (52, 348110), (56, 323245), (65, 278488), (70, 258596), (91, 198920), (104, 174055), (130, 139244), (140, 129298), (182, 99460), (260, 69622), (280, 64649), (364, 49730), (455, 39784), (520, 34811), (728, 24865), (910, 19892), (1820, 9946), (3640, 4973)]