19815240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2707}}^1$

素因数の和:2782

約数の個数: 64

約数和(自身を含む): 60442560

約数和(自身を除く): 40627320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 2707, 3660, 5414, 7320, 8121, 10828, 13535, 16242, 21656, 27070, 32484, 40605, 54140, 64968, 81210, 108280, 162420, 165127, 324840, 330254, 495381, 660508, 825635, 990762, 1321016, 1651270, 1981524, 2476905, 3302540, 3963048, 4953810, 6605080, 9907620, 19815240]

約数ペア:

[(1, 19815240), (2, 9907620), (3, 6605080), (4, 4953810), (5, 3963048), (6, 3302540), (8, 2476905), (10, 1981524), (12, 1651270), (15, 1321016), (20, 990762), (24, 825635), (30, 660508), (40, 495381), (60, 330254), (61, 324840), (120, 165127), (122, 162420), (183, 108280), (244, 81210), (305, 64968), (366, 54140), (488, 40605), (610, 32484), (732, 27070), (915, 21656), (1220, 16242), (1464, 13535), (1830, 10828), (2440, 8121), (2707, 7320), (3660, 5414)]