20161461640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{491}}^1\times {\mathrm{557}}^1$

素因数の和:1175

約数の個数: 128

約数和(自身を含む): 48428150400

約数和(自身を除く): 28266688760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 97, 152, 190, 194, 380, 388, 485, 491, 557, 760, 776, 970, 982, 1114, 1843, 1940, 1964, 2228, 2455, 2785, 3686, 3880, 3928, 4456, 4910, 5570, 7372, 9215, 9329, 9820, 10583, 11140, 14744, 18430, 18658, 19640, 21166, 22280, 36860, 37316, 42332, 46645, 47627, 52915, 54029, 73720, 74632, 84664, 93290, 95254, 105830, 108058, 186580, 190508, 211660, 216116, 238135, 270145, 273487, 373160, 381016, 423320, 432232, 476270, 540290, 546974, 904913, 952540, 1026551, 1080580, 1093948, 1367435, 1809826, 1905080, 2053102, 2161160, 2187896, 2734870, 3619652, 4106204, 4524565, 5132755, 5196253, 5469740, 7239304, 8212408, 9049130, 10265510, 10392506, 10939480, 18098260, 20531020, 20785012, 25981265, 26528239, 36196520, 41062040, 41570024, 51962530, 53056478, 103925060, 106112956, 132641195, 207850120, 212225912, 265282390, 504036541, 530564780, 1008073082, 1061129560, 2016146164, 2520182705, 4032292328, 5040365410, 10080730820, 20161461640]

約数ペア:

[(1, 20161461640), (2, 10080730820), (4, 5040365410), (5, 4032292328), (8, 2520182705), (10, 2016146164), (19, 1061129560), (20, 1008073082), (38, 530564780), (40, 504036541), (76, 265282390), (95, 212225912), (97, 207850120), (152, 132641195), (190, 106112956), (194, 103925060), (380, 53056478), (388, 51962530), (485, 41570024), (491, 41062040), (557, 36196520), (760, 26528239), (776, 25981265), (970, 20785012), (982, 20531020), (1114, 18098260), (1843, 10939480), (1940, 10392506), (1964, 10265510), (2228, 9049130), (2455, 8212408), (2785, 7239304), (3686, 5469740), (3880, 5196253), (3928, 5132755), (4456, 4524565), (4910, 4106204), (5570, 3619652), (7372, 2734870), (9215, 2187896), (9329, 2161160), (9820, 2053102), (10583, 1905080), (11140, 1809826), (14744, 1367435), (18430, 1093948), (18658, 1080580), (19640, 1026551), (21166, 952540), (22280, 904913), (36860, 546974), (37316, 540290), (42332, 476270), (46645, 432232), (47627, 423320), (52915, 381016), (54029, 373160), (73720, 273487), (74632, 270145), (84664, 238135), (93290, 216116), (95254, 211660), (105830, 190508), (108058, 186580)]