19439940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{24923}}^1$

素因数の和:24948

約数の個数: 48

約数和(自身を含む): 58621248

約数和(自身を除く): 39181308

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 24923, 49846, 74769, 99692, 124615, 149538, 249230, 299076, 323999, 373845, 498460, 647998, 747690, 971997, 1295996, 1495380, 1619995, 1943994, 3239990, 3887988, 4859985, 6479980, 9719970, 19439940]

約数ペア:

[(1, 19439940), (2, 9719970), (3, 6479980), (4, 4859985), (5, 3887988), (6, 3239990), (10, 1943994), (12, 1619995), (13, 1495380), (15, 1295996), (20, 971997), (26, 747690), (30, 647998), (39, 498460), (52, 373845), (60, 323999), (65, 299076), (78, 249230), (130, 149538), (156, 124615), (195, 99692), (260, 74769), (390, 49846), (780, 24923)]