1640223520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{788569}}^1$

素因数の和:788597

約数の個数: 48

約数和(自身を含む): 4173112440

約数和(自身を除く): 2532888920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 788569, 1577138, 3154276, 3942845, 6308552, 7885690, 10251397, 12617104, 15771380, 20502794, 25234208, 31542760, 41005588, 51256985, 63085520, 82011176, 102513970, 126171040, 164022352, 205027940, 328044704, 410055880, 820111760, 1640223520]

約数ペア:

[(1, 1640223520), (2, 820111760), (4, 410055880), (5, 328044704), (8, 205027940), (10, 164022352), (13, 126171040), (16, 102513970), (20, 82011176), (26, 63085520), (32, 51256985), (40, 41005588), (52, 31542760), (65, 25234208), (80, 20502794), (104, 15771380), (130, 12617104), (160, 10251397), (208, 7885690), (260, 6308552), (416, 3942845), (520, 3154276), (1040, 1577138), (2080, 788569)]