28455025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 40497408

約数和(自身を除く): 12042383

約数列:

[1, 5, 17, 23, 25, 41, 71, 85, 115, 205, 355, 391, 425, 575, 697, 943, 1025, 1207, 1633, 1775, 1955, 2911, 3485, 4715, 6035, 8165, 9775, 14555, 16031, 17425, 23575, 27761, 30175, 40825, 49487, 66953, 72775, 80155, 138805, 247435, 334765, 400775, 694025, 1138201, 1237175, 1673825, 5691005, 28455025]

約数ペア:

[(1, 28455025), (5, 5691005), (17, 1673825), (23, 1237175), (25, 1138201), (41, 694025), (71, 400775), (85, 334765), (115, 247435), (205, 138805), (355, 80155), (391, 72775), (425, 66953), (575, 49487), (697, 40825), (943, 30175), (1025, 27761), (1207, 23575), (1633, 17425), (1775, 16031), (1955, 14555), (2911, 9775), (3485, 8165), (4715, 6035)]