18970740

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2$

素因数の和:123

約数の個数: 144

約数和(自身を含む): 63604800

約数和(自身を除く): 44634060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 43, 45, 54, 57, 60, 76, 86, 90, 95, 108, 114, 129, 135, 171, 172, 180, 190, 215, 228, 258, 270, 285, 342, 380, 387, 430, 513, 516, 540, 570, 645, 684, 774, 817, 855, 860, 1026, 1140, 1161, 1290, 1548, 1634, 1710, 1849, 1935, 2052, 2322, 2451, 2565, 2580, 3268, 3420, 3698, 3870, 4085, 4644, 4902, 5130, 5547, 5805, 7353, 7396, 7740, 8170, 9245, 9804, 10260, 11094, 11610, 12255, 14706, 16340, 16641, 18490, 22059, 22188, 23220, 24510, 27735, 29412, 33282, 35131, 36765, 36980, 44118, 49020, 49923, 55470, 66564, 70262, 73530, 83205, 88236, 99846, 105393, 110295, 110940, 140524, 147060, 166410, 175655, 199692, 210786, 220590, 249615, 316179, 332820, 351310, 421572, 441180, 499230, 526965, 632358, 702620, 948537, 998460, 1053930, 1264716, 1580895, 1897074, 2107860, 3161790, 3794148, 4742685, 6323580, 9485370, 18970740]

約数ペア:

[(1, 18970740), (2, 9485370), (3, 6323580), (4, 4742685), (5, 3794148), (6, 3161790), (9, 2107860), (10, 1897074), (12, 1580895), (15, 1264716), (18, 1053930), (19, 998460), (20, 948537), (27, 702620), (30, 632358), (36, 526965), (38, 499230), (43, 441180), (45, 421572), (54, 351310), (57, 332820), (60, 316179), (76, 249615), (86, 220590), (90, 210786), (95, 199692), (108, 175655), (114, 166410), (129, 147060), (135, 140524), (171, 110940), (172, 110295), (180, 105393), (190, 99846), (215, 88236), (228, 83205), (258, 73530), (270, 70262), (285, 66564), (342, 55470), (380, 49923), (387, 49020), (430, 44118), (513, 36980), (516, 36765), (540, 35131), (570, 33282), (645, 29412), (684, 27735), (774, 24510), (817, 23220), (855, 22188), (860, 22059), (1026, 18490), (1140, 16641), (1161, 16340), (1290, 14706), (1548, 12255), (1634, 11610), (1710, 11094), (1849, 10260), (1935, 9804), (2052, 9245), (2322, 8170), (2451, 7740), (2565, 7396), (2580, 7353), (3268, 5805), (3420, 5547), (3698, 5130), (3870, 4902), (4085, 4644)]