18649925

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 28569600

約数和(自身を除く): 9919675

約数列:

[1, 5, 7, 19, 25, 35, 71, 79, 95, 133, 175, 355, 395, 475, 497, 553, 665, 1349, 1501, 1775, 1975, 2485, 2765, 3325, 5609, 6745, 7505, 9443, 10507, 12425, 13825, 28045, 33725, 37525, 39263, 47215, 52535, 106571, 140225, 196315, 236075, 262675, 532855, 745997, 981575, 2664275, 3729985, 18649925]

約数ペア:

[(1, 18649925), (5, 3729985), (7, 2664275), (19, 981575), (25, 745997), (35, 532855), (71, 262675), (79, 236075), (95, 196315), (133, 140225), (175, 106571), (355, 52535), (395, 47215), (475, 39263), (497, 37525), (553, 33725), (665, 28045), (1349, 13825), (1501, 12425), (1775, 10507), (1975, 9443), (2485, 7505), (2765, 6745), (3325, 5609)]