20388840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1297}}^1$

素因数の和:1442

約数の個数: 64

約数和(自身を含む): 61680960

約数和(自身を除く): 41292120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 131, 262, 393, 524, 655, 786, 1048, 1297, 1310, 1572, 1965, 2594, 2620, 3144, 3891, 3930, 5188, 5240, 6485, 7782, 7860, 10376, 12970, 15564, 15720, 19455, 25940, 31128, 38910, 51880, 77820, 155640, 169907, 339814, 509721, 679628, 849535, 1019442, 1359256, 1699070, 2038884, 2548605, 3398140, 4077768, 5097210, 6796280, 10194420, 20388840]

約数ペア:

[(1, 20388840), (2, 10194420), (3, 6796280), (4, 5097210), (5, 4077768), (6, 3398140), (8, 2548605), (10, 2038884), (12, 1699070), (15, 1359256), (20, 1019442), (24, 849535), (30, 679628), (40, 509721), (60, 339814), (120, 169907), (131, 155640), (262, 77820), (393, 51880), (524, 38910), (655, 31128), (786, 25940), (1048, 19455), (1297, 15720), (1310, 15564), (1572, 12970), (1965, 10376), (2594, 7860), (2620, 7782), (3144, 6485), (3891, 5240), (3930, 5188)]