21319760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3461}}^1$

素因数の和:3492

約数の個数: 80

約数和(自身を含む): 61817472

約数和(自身を除く): 40497712

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3461, 6160, 6922, 13844, 17305, 24227, 27688, 34610, 38071, 48454, 55376, 69220, 76142, 96908, 121135, 138440, 152284, 190355, 193816, 242270, 266497, 276880, 304568, 380710, 387632, 484540, 532994, 609136, 761420, 969080, 1065988, 1332485, 1522840, 1938160, 2131976, 2664970, 3045680, 4263952, 5329940, 10659880, 21319760]

約数ペア:

[(1, 21319760), (2, 10659880), (4, 5329940), (5, 4263952), (7, 3045680), (8, 2664970), (10, 2131976), (11, 1938160), (14, 1522840), (16, 1332485), (20, 1065988), (22, 969080), (28, 761420), (35, 609136), (40, 532994), (44, 484540), (55, 387632), (56, 380710), (70, 304568), (77, 276880), (80, 266497), (88, 242270), (110, 193816), (112, 190355), (140, 152284), (154, 138440), (176, 121135), (220, 96908), (280, 76142), (308, 69220), (385, 55376), (440, 48454), (560, 38071), (616, 34610), (770, 27688), (880, 24227), (1232, 17305), (1540, 13844), (3080, 6922), (3461, 6160)]