21997920

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{6547}}^1$

素因数の和:6572

約数の個数: 96

約数和(自身を含む): 79204608

約数和(自身を除く): 57206688

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 210, 224, 240, 280, 336, 420, 480, 560, 672, 840, 1120, 1680, 3360, 6547, 13094, 19641, 26188, 32735, 39282, 45829, 52376, 65470, 78564, 91658, 98205, 104752, 130940, 137487, 157128, 183316, 196410, 209504, 229145, 261880, 274974, 314256, 366632, 392820, 458290, 523760, 549948, 628512, 687435, 733264, 785640, 916580, 1047520, 1099896, 1374870, 1466528, 1571280, 1833160, 2199792, 2749740, 3142560, 3666320, 4399584, 5499480, 7332640, 10998960, 21997920]

約数ペア:

[(1, 21997920), (2, 10998960), (3, 7332640), (4, 5499480), (5, 4399584), (6, 3666320), (7, 3142560), (8, 2749740), (10, 2199792), (12, 1833160), (14, 1571280), (15, 1466528), (16, 1374870), (20, 1099896), (21, 1047520), (24, 916580), (28, 785640), (30, 733264), (32, 687435), (35, 628512), (40, 549948), (42, 523760), (48, 458290), (56, 392820), (60, 366632), (70, 314256), (80, 274974), (84, 261880), (96, 229145), (105, 209504), (112, 196410), (120, 183316), (140, 157128), (160, 137487), (168, 130940), (210, 104752), (224, 98205), (240, 91658), (280, 78564), (336, 65470), (420, 52376), (480, 45829), (560, 39282), (672, 32735), (840, 26188), (1120, 19641), (1680, 13094), (3360, 6547)]