161805420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{457}}^1$

素因数の和:760

約数の個数: 144

約数和(自身を含む): 564153408

約数和(自身を除く): 402347988

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 281, 315, 420, 457, 562, 630, 843, 914, 1124, 1260, 1371, 1405, 1686, 1828, 1967, 2285, 2529, 2742, 2810, 3199, 3372, 3934, 4113, 4215, 4570, 5058, 5484, 5620, 5901, 6398, 6855, 7868, 8226, 8430, 9140, 9597, 9835, 10116, 11802, 12645, 12796, 13710, 15995, 16452, 16860, 17703, 19194, 19670, 20565, 23604, 25290, 27420, 28791, 29505, 31990, 35406, 38388, 39340, 41130, 47985, 50580, 57582, 59010, 63980, 70812, 82260, 88515, 95970, 115164, 118020, 128417, 143955, 177030, 191940, 256834, 287910, 354060, 385251, 513668, 575820, 642085, 770502, 898919, 1155753, 1284170, 1541004, 1797838, 1926255, 2311506, 2568340, 2696757, 3595676, 3852510, 4494595, 4623012, 5393514, 5778765, 7705020, 8090271, 8989190, 10787028, 11557530, 13483785, 16180542, 17978380, 23115060, 26967570, 32361084, 40451355, 53935140, 80902710, 161805420]

約数ペア:

[(1, 161805420), (2, 80902710), (3, 53935140), (4, 40451355), (5, 32361084), (6, 26967570), (7, 23115060), (9, 17978380), (10, 16180542), (12, 13483785), (14, 11557530), (15, 10787028), (18, 8989190), (20, 8090271), (21, 7705020), (28, 5778765), (30, 5393514), (35, 4623012), (36, 4494595), (42, 3852510), (45, 3595676), (60, 2696757), (63, 2568340), (70, 2311506), (84, 1926255), (90, 1797838), (105, 1541004), (126, 1284170), (140, 1155753), (180, 898919), (210, 770502), (252, 642085), (281, 575820), (315, 513668), (420, 385251), (457, 354060), (562, 287910), (630, 256834), (843, 191940), (914, 177030), (1124, 143955), (1260, 128417), (1371, 118020), (1405, 115164), (1686, 95970), (1828, 88515), (1967, 82260), (2285, 70812), (2529, 63980), (2742, 59010), (2810, 57582), (3199, 50580), (3372, 47985), (3934, 41130), (4113, 39340), (4215, 38388), (4570, 35406), (5058, 31990), (5484, 29505), (5620, 28791), (5901, 27420), (6398, 25290), (6855, 23604), (7868, 20565), (8226, 19670), (8430, 19194), (9140, 17703), (9597, 16860), (9835, 16452), (10116, 15995), (11802, 13710), (12645, 12796)]