20805519020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{32917}}^1$

素因数の和:32980

約数の個数: 144

約数和(自身を含む): 54649673568

約数和(自身を除く): 33844154548

約数列:

[1, 2, 4, 5, 10, 11, 13, 17, 20, 22, 26, 34, 44, 52, 55, 65, 68, 85, 110, 130, 143, 169, 170, 187, 220, 221, 260, 286, 338, 340, 374, 442, 572, 676, 715, 748, 845, 884, 935, 1105, 1430, 1690, 1859, 1870, 2210, 2431, 2860, 2873, 3380, 3718, 3740, 4420, 4862, 5746, 7436, 9295, 9724, 11492, 12155, 14365, 18590, 24310, 28730, 31603, 32917, 37180, 48620, 57460, 63206, 65834, 126412, 131668, 158015, 164585, 316030, 329170, 362087, 427921, 559589, 632060, 658340, 724174, 855842, 1119178, 1448348, 1711684, 1810435, 2139605, 2238356, 2797945, 3620870, 4279210, 4707131, 5562973, 5595890, 6155479, 7241740, 7274657, 8558420, 9414262, 11125946, 11191780, 12310958, 14549314, 18828524, 22251892, 23535655, 24621916, 27814865, 29098628, 30777395, 36373285, 47071310, 55629730, 61192703, 61554790, 72746570, 80021227, 94142620, 94570541, 111259460, 122385406, 123109580, 145493140, 160042454, 189141082, 244770812, 305963515, 320084908, 378282164, 400106135, 472852705, 611927030, 800212270, 945705410, 1040275951, 1223854060, 1600424540, 1891410820, 2080551902, 4161103804, 5201379755, 10402759510, 20805519020]

約数ペア:

[(1, 20805519020), (2, 10402759510), (4, 5201379755), (5, 4161103804), (10, 2080551902), (11, 1891410820), (13, 1600424540), (17, 1223854060), (20, 1040275951), (22, 945705410), (26, 800212270), (34, 611927030), (44, 472852705), (52, 400106135), (55, 378282164), (65, 320084908), (68, 305963515), (85, 244770812), (110, 189141082), (130, 160042454), (143, 145493140), (169, 123109580), (170, 122385406), (187, 111259460), (220, 94570541), (221, 94142620), (260, 80021227), (286, 72746570), (338, 61554790), (340, 61192703), (374, 55629730), (442, 47071310), (572, 36373285), (676, 30777395), (715, 29098628), (748, 27814865), (845, 24621916), (884, 23535655), (935, 22251892), (1105, 18828524), (1430, 14549314), (1690, 12310958), (1859, 11191780), (1870, 11125946), (2210, 9414262), (2431, 8558420), (2860, 7274657), (2873, 7241740), (3380, 6155479), (3718, 5595890), (3740, 5562973), (4420, 4707131), (4862, 4279210), (5746, 3620870), (7436, 2797945), (9295, 2238356), (9724, 2139605), (11492, 1810435), (12155, 1711684), (14365, 1448348), (18590, 1119178), (24310, 855842), (28730, 724174), (31603, 658340), (32917, 632060), (37180, 559589), (48620, 427921), (57460, 362087), (63206, 329170), (65834, 316030), (126412, 164585), (131668, 158015)]