209935520

素因数分解:

$2^5\times 5^1\times {\mathrm{389}}^1\times {\mathrm{3373}}^1$

素因数の和:3777

約数の個数: 48

約数和(自身を含む): 497395080

約数和(自身を除く): 287459560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 389, 778, 1556, 1945, 3112, 3373, 3890, 6224, 6746, 7780, 12448, 13492, 15560, 16865, 26984, 31120, 33730, 53968, 62240, 67460, 107936, 134920, 269840, 539680, 1312097, 2624194, 5248388, 6560485, 10496776, 13120970, 20993552, 26241940, 41987104, 52483880, 104967760, 209935520]

約数ペア:

[(1, 209935520), (2, 104967760), (4, 52483880), (5, 41987104), (8, 26241940), (10, 20993552), (16, 13120970), (20, 10496776), (32, 6560485), (40, 5248388), (80, 2624194), (160, 1312097), (389, 539680), (778, 269840), (1556, 134920), (1945, 107936), (3112, 67460), (3373, 62240), (3890, 53968), (6224, 33730), (6746, 31120), (7780, 26984), (12448, 16865), (13492, 15560)]