721184940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^3\times {\mathrm{11681}}^1$

素因数の和:11717

約数の個数: 144

約数和(自身を含む): 2551348800

約数和(自身を除く): 1830163860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 343, 420, 441, 490, 588, 630, 686, 735, 882, 980, 1029, 1260, 1372, 1470, 1715, 1764, 2058, 2205, 2940, 3087, 3430, 4116, 4410, 5145, 6174, 6860, 8820, 10290, 11681, 12348, 15435, 20580, 23362, 30870, 35043, 46724, 58405, 61740, 70086, 81767, 105129, 116810, 140172, 163534, 175215, 210258, 233620, 245301, 327068, 350430, 408835, 420516, 490602, 525645, 572369, 700860, 735903, 817670, 981204, 1051290, 1144738, 1226505, 1471806, 1635340, 1717107, 2102580, 2289476, 2453010, 2861845, 2943612, 3434214, 3679515, 4006583, 4906020, 5151321, 5723690, 6868428, 7359030, 8013166, 8585535, 10302642, 11447380, 12019749, 14718060, 16026332, 17171070, 20032915, 20605284, 24039498, 25756605, 34342140, 36059247, 40065830, 48078996, 51513210, 60098745, 72118494, 80131660, 103026420, 120197490, 144236988, 180296235, 240394980, 360592470, 721184940]

約数ペア:

[(1, 721184940), (2, 360592470), (3, 240394980), (4, 180296235), (5, 144236988), (6, 120197490), (7, 103026420), (9, 80131660), (10, 72118494), (12, 60098745), (14, 51513210), (15, 48078996), (18, 40065830), (20, 36059247), (21, 34342140), (28, 25756605), (30, 24039498), (35, 20605284), (36, 20032915), (42, 17171070), (45, 16026332), (49, 14718060), (60, 12019749), (63, 11447380), (70, 10302642), (84, 8585535), (90, 8013166), (98, 7359030), (105, 6868428), (126, 5723690), (140, 5151321), (147, 4906020), (180, 4006583), (196, 3679515), (210, 3434214), (245, 2943612), (252, 2861845), (294, 2453010), (315, 2289476), (343, 2102580), (420, 1717107), (441, 1635340), (490, 1471806), (588, 1226505), (630, 1144738), (686, 1051290), (735, 981204), (882, 817670), (980, 735903), (1029, 700860), (1260, 572369), (1372, 525645), (1470, 490602), (1715, 420516), (1764, 408835), (2058, 350430), (2205, 327068), (2940, 245301), (3087, 233620), (3430, 210258), (4116, 175215), (4410, 163534), (5145, 140172), (6174, 116810), (6860, 105129), (8820, 81767), (10290, 70086), (11681, 61740), (12348, 58405), (15435, 46724), (20580, 35043), (23362, 30870)]