77990820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^2$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 241698240

約数和(自身を除く): 163707420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 37, 38, 43, 57, 60, 74, 76, 86, 95, 111, 114, 129, 148, 172, 185, 190, 215, 222, 228, 258, 285, 370, 380, 430, 444, 516, 555, 570, 645, 703, 740, 817, 860, 1110, 1140, 1290, 1406, 1591, 1634, 1849, 2109, 2220, 2451, 2580, 2812, 3182, 3268, 3515, 3698, 4085, 4218, 4773, 4902, 5547, 6364, 7030, 7396, 7955, 8170, 8436, 9245, 9546, 9804, 10545, 11094, 12255, 14060, 15910, 16340, 18490, 19092, 21090, 22188, 23865, 24510, 27735, 30229, 31820, 35131, 36980, 42180, 47730, 49020, 55470, 60458, 68413, 70262, 90687, 95460, 105393, 110940, 120916, 136826, 140524, 151145, 175655, 181374, 205239, 210786, 273652, 302290, 342065, 351310, 362748, 410478, 421572, 453435, 526965, 604580, 684130, 702620, 820956, 906870, 1026195, 1053930, 1299847, 1368260, 1813740, 2052390, 2107860, 2599694, 3899541, 4104780, 5199388, 6499235, 7799082, 12998470, 15598164, 19497705, 25996940, 38995410, 77990820]

約数ペア:

[(1, 77990820), (2, 38995410), (3, 25996940), (4, 19497705), (5, 15598164), (6, 12998470), (10, 7799082), (12, 6499235), (15, 5199388), (19, 4104780), (20, 3899541), (30, 2599694), (37, 2107860), (38, 2052390), (43, 1813740), (57, 1368260), (60, 1299847), (74, 1053930), (76, 1026195), (86, 906870), (95, 820956), (111, 702620), (114, 684130), (129, 604580), (148, 526965), (172, 453435), (185, 421572), (190, 410478), (215, 362748), (222, 351310), (228, 342065), (258, 302290), (285, 273652), (370, 210786), (380, 205239), (430, 181374), (444, 175655), (516, 151145), (555, 140524), (570, 136826), (645, 120916), (703, 110940), (740, 105393), (817, 95460), (860, 90687), (1110, 70262), (1140, 68413), (1290, 60458), (1406, 55470), (1591, 49020), (1634, 47730), (1849, 42180), (2109, 36980), (2220, 35131), (2451, 31820), (2580, 30229), (2812, 27735), (3182, 24510), (3268, 23865), (3515, 22188), (3698, 21090), (4085, 19092), (4218, 18490), (4773, 16340), (4902, 15910), (5547, 14060), (6364, 12255), (7030, 11094), (7396, 10545), (7955, 9804), (8170, 9546), (8436, 9245)]