661188920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:589

約数の個数: 128

約数和(自身を含む): 1750118400

約数和(自身を除く): 1088929480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 79, 140, 142, 158, 280, 284, 316, 355, 395, 421, 497, 553, 568, 632, 710, 790, 842, 994, 1106, 1420, 1580, 1684, 1988, 2105, 2212, 2485, 2765, 2840, 2947, 3160, 3368, 3976, 4210, 4424, 4970, 5530, 5609, 5894, 8420, 9940, 11060, 11218, 11788, 14735, 16840, 19880, 22120, 22436, 23576, 28045, 29470, 29891, 33259, 39263, 44872, 56090, 58940, 59782, 66518, 78526, 112180, 117880, 119564, 133036, 149455, 157052, 166295, 196315, 209237, 224360, 232813, 239128, 266072, 298910, 314104, 332590, 392630, 418474, 465626, 597820, 665180, 785260, 836948, 931252, 1046185, 1164065, 1195640, 1330360, 1570520, 1673896, 1862504, 2092370, 2328130, 2361389, 4184740, 4656260, 4722778, 8369480, 9312520, 9445556, 11806945, 16529723, 18891112, 23613890, 33059446, 47227780, 66118892, 82648615, 94455560, 132237784, 165297230, 330594460, 661188920]

約数ペア:

[(1, 661188920), (2, 330594460), (4, 165297230), (5, 132237784), (7, 94455560), (8, 82648615), (10, 66118892), (14, 47227780), (20, 33059446), (28, 23613890), (35, 18891112), (40, 16529723), (56, 11806945), (70, 9445556), (71, 9312520), (79, 8369480), (140, 4722778), (142, 4656260), (158, 4184740), (280, 2361389), (284, 2328130), (316, 2092370), (355, 1862504), (395, 1673896), (421, 1570520), (497, 1330360), (553, 1195640), (568, 1164065), (632, 1046185), (710, 931252), (790, 836948), (842, 785260), (994, 665180), (1106, 597820), (1420, 465626), (1580, 418474), (1684, 392630), (1988, 332590), (2105, 314104), (2212, 298910), (2485, 266072), (2765, 239128), (2840, 232813), (2947, 224360), (3160, 209237), (3368, 196315), (3976, 166295), (4210, 157052), (4424, 149455), (4970, 133036), (5530, 119564), (5609, 117880), (5894, 112180), (8420, 78526), (9940, 66518), (11060, 59782), (11218, 58940), (11788, 56090), (14735, 44872), (16840, 39263), (19880, 33259), (22120, 29891), (22436, 29470), (23576, 28045)]