20188740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{181}}^1$

素因数の和:230

約数の個数: 144

約数和(自身を含む): 67144896

約数和(自身を除く): 46956156

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 65, 66, 78, 110, 130, 132, 143, 156, 165, 169, 181, 195, 220, 260, 286, 330, 338, 362, 390, 429, 507, 543, 572, 660, 676, 715, 724, 780, 845, 858, 905, 1014, 1086, 1430, 1690, 1716, 1810, 1859, 1991, 2028, 2145, 2172, 2353, 2535, 2715, 2860, 3380, 3620, 3718, 3982, 4290, 4706, 5070, 5430, 5577, 5973, 7059, 7436, 7964, 8580, 9295, 9412, 9955, 10140, 10860, 11154, 11765, 11946, 14118, 18590, 19910, 22308, 23530, 23892, 25883, 27885, 28236, 29865, 30589, 35295, 37180, 39820, 47060, 51766, 55770, 59730, 61178, 70590, 77649, 91767, 103532, 111540, 119460, 122356, 129415, 141180, 152945, 155298, 183534, 258830, 305890, 310596, 336479, 367068, 388245, 458835, 517660, 611780, 672958, 776490, 917670, 1009437, 1345916, 1552980, 1682395, 1835340, 2018874, 3364790, 4037748, 5047185, 6729580, 10094370, 20188740]

約数ペア:

[(1, 20188740), (2, 10094370), (3, 6729580), (4, 5047185), (5, 4037748), (6, 3364790), (10, 2018874), (11, 1835340), (12, 1682395), (13, 1552980), (15, 1345916), (20, 1009437), (22, 917670), (26, 776490), (30, 672958), (33, 611780), (39, 517660), (44, 458835), (52, 388245), (55, 367068), (60, 336479), (65, 310596), (66, 305890), (78, 258830), (110, 183534), (130, 155298), (132, 152945), (143, 141180), (156, 129415), (165, 122356), (169, 119460), (181, 111540), (195, 103532), (220, 91767), (260, 77649), (286, 70590), (330, 61178), (338, 59730), (362, 55770), (390, 51766), (429, 47060), (507, 39820), (543, 37180), (572, 35295), (660, 30589), (676, 29865), (715, 28236), (724, 27885), (780, 25883), (845, 23892), (858, 23530), (905, 22308), (1014, 19910), (1086, 18590), (1430, 14118), (1690, 11946), (1716, 11765), (1810, 11154), (1859, 10860), (1991, 10140), (2028, 9955), (2145, 9412), (2172, 9295), (2353, 8580), (2535, 7964), (2715, 7436), (2860, 7059), (3380, 5973), (3620, 5577), (3718, 5430), (3982, 5070), (4290, 4706)]