78564340

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{907}}^1$

素因数の和:1048

約数の個数: 48

約数和(自身を含む): 170239104

約数和(自身を除く): 91674764

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 122, 142, 244, 284, 305, 355, 610, 710, 907, 1220, 1420, 1814, 3628, 4331, 4535, 8662, 9070, 17324, 18140, 21655, 43310, 55327, 64397, 86620, 110654, 128794, 221308, 257588, 276635, 321985, 553270, 643970, 1106540, 1287940, 3928217, 7856434, 15712868, 19641085, 39282170, 78564340]

約数ペア:

[(1, 78564340), (2, 39282170), (4, 19641085), (5, 15712868), (10, 7856434), (20, 3928217), (61, 1287940), (71, 1106540), (122, 643970), (142, 553270), (244, 321985), (284, 276635), (305, 257588), (355, 221308), (610, 128794), (710, 110654), (907, 86620), (1220, 64397), (1420, 55327), (1814, 43310), (3628, 21655), (4331, 18140), (4535, 17324), (8662, 9070)]