18667740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{263}}^1$

素因数の和:308

約数の個数: 144

約数和(自身を含む): 64931328

約数和(自身を除く): 46263588

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 169, 182, 195, 210, 260, 263, 273, 338, 364, 390, 420, 455, 507, 526, 546, 676, 780, 789, 845, 910, 1014, 1052, 1092, 1183, 1315, 1365, 1578, 1690, 1820, 1841, 2028, 2366, 2535, 2630, 2730, 3156, 3380, 3419, 3549, 3682, 3945, 4732, 5070, 5260, 5460, 5523, 5915, 6838, 7098, 7364, 7890, 9205, 10140, 10257, 11046, 11830, 13676, 14196, 15780, 17095, 17745, 18410, 20514, 22092, 23660, 23933, 27615, 34190, 35490, 36820, 41028, 44447, 47866, 51285, 55230, 68380, 70980, 71799, 88894, 95732, 102570, 110460, 119665, 133341, 143598, 177788, 205140, 222235, 239330, 266682, 287196, 311129, 358995, 444470, 478660, 533364, 622258, 666705, 717990, 888940, 933387, 1244516, 1333410, 1435980, 1555645, 1866774, 2666820, 3111290, 3733548, 4666935, 6222580, 9333870, 18667740]

約数ペア:

[(1, 18667740), (2, 9333870), (3, 6222580), (4, 4666935), (5, 3733548), (6, 3111290), (7, 2666820), (10, 1866774), (12, 1555645), (13, 1435980), (14, 1333410), (15, 1244516), (20, 933387), (21, 888940), (26, 717990), (28, 666705), (30, 622258), (35, 533364), (39, 478660), (42, 444470), (52, 358995), (60, 311129), (65, 287196), (70, 266682), (78, 239330), (84, 222235), (91, 205140), (105, 177788), (130, 143598), (140, 133341), (156, 119665), (169, 110460), (182, 102570), (195, 95732), (210, 88894), (260, 71799), (263, 70980), (273, 68380), (338, 55230), (364, 51285), (390, 47866), (420, 44447), (455, 41028), (507, 36820), (526, 35490), (546, 34190), (676, 27615), (780, 23933), (789, 23660), (845, 22092), (910, 20514), (1014, 18410), (1052, 17745), (1092, 17095), (1183, 15780), (1315, 14196), (1365, 13676), (1578, 11830), (1690, 11046), (1820, 10257), (1841, 10140), (2028, 9205), (2366, 7890), (2535, 7364), (2630, 7098), (2730, 6838), (3156, 5915), (3380, 5523), (3419, 5460), (3549, 5260), (3682, 5070), (3945, 4732)]