20611290

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1609}}^1$

素因数の和:1687

約数の個数: 64

約数和(自身を含む): 57496320

約数和(自身を除く): 36885030

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 61, 70, 105, 122, 183, 210, 305, 366, 427, 610, 854, 915, 1281, 1609, 1830, 2135, 2562, 3218, 4270, 4827, 6405, 8045, 9654, 11263, 12810, 16090, 22526, 24135, 33789, 48270, 56315, 67578, 98149, 112630, 168945, 196298, 294447, 337890, 490745, 588894, 687043, 981490, 1374086, 1472235, 2061129, 2944470, 3435215, 4122258, 6870430, 10305645, 20611290]

約数ペア:

[(1, 20611290), (2, 10305645), (3, 6870430), (5, 4122258), (6, 3435215), (7, 2944470), (10, 2061129), (14, 1472235), (15, 1374086), (21, 981490), (30, 687043), (35, 588894), (42, 490745), (61, 337890), (70, 294447), (105, 196298), (122, 168945), (183, 112630), (210, 98149), (305, 67578), (366, 56315), (427, 48270), (610, 33789), (854, 24135), (915, 22526), (1281, 16090), (1609, 12810), (1830, 11263), (2135, 9654), (2562, 8045), (3218, 6405), (4270, 4827)]