19802025

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 38997504

約数和(自身を除く): 19195479

約数列:

[1, 3, 5, 9, 15, 17, 25, 31, 45, 51, 75, 85, 93, 153, 155, 167, 225, 255, 279, 425, 465, 501, 527, 765, 775, 835, 1275, 1395, 1503, 1581, 2325, 2505, 2635, 2839, 3825, 4175, 4743, 5177, 6975, 7515, 7905, 8517, 12525, 13175, 14195, 15531, 23715, 25551, 25885, 37575, 39525, 42585, 46593, 70975, 77655, 88009, 118575, 127755, 129425, 212925, 232965, 264027, 388275, 440045, 638775, 792081, 1164825, 1320135, 2200225, 3960405, 6600675, 19802025]

約数ペア:

[(1, 19802025), (3, 6600675), (5, 3960405), (9, 2200225), (15, 1320135), (17, 1164825), (25, 792081), (31, 638775), (45, 440045), (51, 388275), (75, 264027), (85, 232965), (93, 212925), (153, 129425), (155, 127755), (167, 118575), (225, 88009), (255, 77655), (279, 70975), (425, 46593), (465, 42585), (501, 39525), (527, 37575), (765, 25885), (775, 25551), (835, 23715), (1275, 15531), (1395, 14195), (1503, 13175), (1581, 12525), (2325, 8517), (2505, 7905), (2635, 7515), (2839, 6975), (3825, 5177), (4175, 4743)]