16720380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{4889}}^1$

素因数の和:4923

約数の個数: 72

約数和(自身を含む): 53398800

約数和(自身を除く): 36678420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 4889, 9778, 14667, 19556, 24445, 29334, 44001, 48890, 58668, 73335, 88002, 92891, 97780, 146670, 176004, 185782, 220005, 278673, 293340, 371564, 440010, 464455, 557346, 836019, 880020, 928910, 1114692, 1393365, 1672038, 1857820, 2786730, 3344076, 4180095, 5573460, 8360190, 16720380]

約数ペア:

[(1, 16720380), (2, 8360190), (3, 5573460), (4, 4180095), (5, 3344076), (6, 2786730), (9, 1857820), (10, 1672038), (12, 1393365), (15, 1114692), (18, 928910), (19, 880020), (20, 836019), (30, 557346), (36, 464455), (38, 440010), (45, 371564), (57, 293340), (60, 278673), (76, 220005), (90, 185782), (95, 176004), (114, 146670), (171, 97780), (180, 92891), (190, 88002), (228, 73335), (285, 58668), (342, 48890), (380, 44001), (570, 29334), (684, 24445), (855, 19556), (1140, 14667), (1710, 9778), (3420, 4889)]