20613290

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 21377110

約数列:

[1, 2, 5, 10, 19, 23, 38, 46, 53, 89, 95, 106, 115, 178, 190, 230, 265, 437, 445, 530, 874, 890, 1007, 1219, 1691, 2014, 2047, 2185, 2438, 3382, 4094, 4370, 4717, 5035, 6095, 8455, 9434, 10070, 10235, 12190, 16910, 20470, 23161, 23585, 38893, 46322, 47170, 77786, 89623, 108491, 115805, 179246, 194465, 216982, 231610, 388930, 448115, 542455, 896230, 1084910, 2061329, 4122658, 10306645, 20613290]

約数ペア:

[(1, 20613290), (2, 10306645), (5, 4122658), (10, 2061329), (19, 1084910), (23, 896230), (38, 542455), (46, 448115), (53, 388930), (89, 231610), (95, 216982), (106, 194465), (115, 179246), (178, 115805), (190, 108491), (230, 89623), (265, 77786), (437, 47170), (445, 46322), (530, 38893), (874, 23585), (890, 23161), (1007, 20470), (1219, 16910), (1691, 12190), (2014, 10235), (2047, 10070), (2185, 9434), (2438, 8455), (3382, 6095), (4094, 5035), (4370, 4717)]