18727280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1637}}^1$

素因数の和:1674

約数の個数: 80

約数和(自身を含む): 51184224

約数和(自身を除く): 32456944

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 1637, 2288, 2860, 3274, 5720, 6548, 8185, 11440, 13096, 16370, 18007, 21281, 26192, 32740, 36014, 42562, 65480, 72028, 85124, 90035, 106405, 130960, 144056, 170248, 180070, 212810, 234091, 288112, 340496, 360140, 425620, 468182, 720280, 851240, 936364, 1170455, 1440560, 1702480, 1872728, 2340910, 3745456, 4681820, 9363640, 18727280]

約数ペア:

[(1, 18727280), (2, 9363640), (4, 4681820), (5, 3745456), (8, 2340910), (10, 1872728), (11, 1702480), (13, 1440560), (16, 1170455), (20, 936364), (22, 851240), (26, 720280), (40, 468182), (44, 425620), (52, 360140), (55, 340496), (65, 288112), (80, 234091), (88, 212810), (104, 180070), (110, 170248), (130, 144056), (143, 130960), (176, 106405), (208, 90035), (220, 85124), (260, 72028), (286, 65480), (440, 42562), (520, 36014), (572, 32740), (715, 26192), (880, 21281), (1040, 18007), (1144, 16370), (1430, 13096), (1637, 11440), (2288, 8185), (2860, 6548), (3274, 5720)]