20358464140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{194149}}^1$

素因数の和:194279

約数の個数: 72

約数和(自身を含む): 50197870800

約数和(自身を除く): 29839406660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 107, 140, 196, 214, 245, 428, 490, 535, 749, 980, 1070, 1498, 2140, 2996, 3745, 5243, 7490, 10486, 14980, 20972, 26215, 52430, 104860, 194149, 388298, 776596, 970745, 1359043, 1941490, 2718086, 3882980, 5436172, 6795215, 9513301, 13590430, 19026602, 20773943, 27180860, 38053204, 41547886, 47566505, 83095772, 95133010, 103869715, 145417601, 190266020, 207739430, 290835202, 415478860, 581670404, 727088005, 1017923207, 1454176010, 2035846414, 2908352020, 4071692828, 5089616035, 10179232070, 20358464140]

約数ペア:

[(1, 20358464140), (2, 10179232070), (4, 5089616035), (5, 4071692828), (7, 2908352020), (10, 2035846414), (14, 1454176010), (20, 1017923207), (28, 727088005), (35, 581670404), (49, 415478860), (70, 290835202), (98, 207739430), (107, 190266020), (140, 145417601), (196, 103869715), (214, 95133010), (245, 83095772), (428, 47566505), (490, 41547886), (535, 38053204), (749, 27180860), (980, 20773943), (1070, 19026602), (1498, 13590430), (2140, 9513301), (2996, 6795215), (3745, 5436172), (5243, 3882980), (7490, 2718086), (10486, 1941490), (14980, 1359043), (20972, 970745), (26215, 776596), (52430, 388298), (104860, 194149)]