1312720920

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{520921}}^1$

素因数の和:520945

約数の個数: 96

約数和(自身を含む): 4875829920

約数和(自身を除く): 3563109000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 520921, 1041842, 1562763, 2083684, 2604605, 3125526, 3646447, 4167368, 4688289, 5209210, 6251052, 7292894, 7813815, 9376578, 10418420, 10939341, 12502104, 14585788, 15627630, 18232235, 18753156, 20836840, 21878682, 23441445, 29171576, 31255260, 32818023, 36464470, 37506312, 43757364, 46882890, 54696705, 62510520, 65636046, 72928940, 87514728, 93765780, 109393410, 131272092, 145857880, 164090115, 187531560, 218786820, 262544184, 328180230, 437573640, 656360460, 1312720920]

約数ペア:

[(1, 1312720920), (2, 656360460), (3, 437573640), (4, 328180230), (5, 262544184), (6, 218786820), (7, 187531560), (8, 164090115), (9, 145857880), (10, 131272092), (12, 109393410), (14, 93765780), (15, 87514728), (18, 72928940), (20, 65636046), (21, 62510520), (24, 54696705), (28, 46882890), (30, 43757364), (35, 37506312), (36, 36464470), (40, 32818023), (42, 31255260), (45, 29171576), (56, 23441445), (60, 21878682), (63, 20836840), (70, 18753156), (72, 18232235), (84, 15627630), (90, 14585788), (105, 12502104), (120, 10939341), (126, 10418420), (140, 9376578), (168, 7813815), (180, 7292894), (210, 6251052), (252, 5209210), (280, 4688289), (315, 4167368), (360, 3646447), (420, 3125526), (504, 2604605), (630, 2083684), (840, 1562763), (1260, 1041842), (2520, 520921)]