1998425380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{21401}}^1$

素因数の和:21469

約数の個数: 96

約数和(自身を含む): 5177571840

約数和(自身を除く): 3179146460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 29, 35, 46, 58, 70, 92, 115, 116, 140, 145, 161, 203, 230, 290, 322, 406, 460, 580, 644, 667, 805, 812, 1015, 1334, 1610, 2030, 2668, 3220, 3335, 4060, 4669, 6670, 9338, 13340, 18676, 21401, 23345, 42802, 46690, 85604, 93380, 107005, 149807, 214010, 299614, 428020, 492223, 599228, 620629, 749035, 984446, 1241258, 1498070, 1968892, 2461115, 2482516, 2996140, 3103145, 3445561, 4344403, 4922230, 6206290, 6891122, 8688806, 9844460, 12412580, 13782244, 14274467, 17227805, 17377612, 21722015, 28548934, 34455610, 43444030, 57097868, 68911220, 71372335, 86888060, 99921269, 142744670, 199842538, 285489340, 399685076, 499606345, 999212690, 1998425380]

約数ペア:

[(1, 1998425380), (2, 999212690), (4, 499606345), (5, 399685076), (7, 285489340), (10, 199842538), (14, 142744670), (20, 99921269), (23, 86888060), (28, 71372335), (29, 68911220), (35, 57097868), (46, 43444030), (58, 34455610), (70, 28548934), (92, 21722015), (115, 17377612), (116, 17227805), (140, 14274467), (145, 13782244), (161, 12412580), (203, 9844460), (230, 8688806), (290, 6891122), (322, 6206290), (406, 4922230), (460, 4344403), (580, 3445561), (644, 3103145), (667, 2996140), (805, 2482516), (812, 2461115), (1015, 1968892), (1334, 1498070), (1610, 1241258), (2030, 984446), (2668, 749035), (3220, 620629), (3335, 599228), (4060, 492223), (4669, 428020), (6670, 299614), (9338, 214010), (13340, 149807), (18676, 107005), (21401, 93380), (23345, 85604), (42802, 46690)]