204729420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^2\times {\mathrm{131}}^1$

素因数の和:272

約数の個数: 144

約数和(自身を含む): 671134464

約数和(自身を除く): 466405044

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 61, 70, 84, 105, 122, 131, 140, 183, 210, 244, 262, 305, 366, 393, 420, 427, 524, 610, 655, 732, 786, 854, 915, 917, 1220, 1281, 1310, 1572, 1708, 1830, 1834, 1965, 2135, 2562, 2620, 2751, 3660, 3668, 3721, 3930, 4270, 4585, 5124, 5502, 6405, 7442, 7860, 7991, 8540, 9170, 11004, 11163, 12810, 13755, 14884, 15982, 18340, 18605, 22326, 23973, 25620, 26047, 27510, 31964, 37210, 39955, 44652, 47946, 52094, 55020, 55815, 55937, 74420, 78141, 79910, 95892, 104188, 111630, 111874, 119865, 130235, 156282, 159820, 167811, 223260, 223748, 239730, 260470, 279685, 312564, 335622, 390705, 479460, 487451, 520940, 559370, 671244, 781410, 839055, 974902, 1118740, 1462353, 1562820, 1678110, 1949804, 2437255, 2924706, 3356220, 3412157, 4874510, 5849412, 6824314, 7311765, 9749020, 10236471, 13648628, 14623530, 17060785, 20472942, 29247060, 34121570, 40945884, 51182355, 68243140, 102364710, 204729420]

約数ペア:

[(1, 204729420), (2, 102364710), (3, 68243140), (4, 51182355), (5, 40945884), (6, 34121570), (7, 29247060), (10, 20472942), (12, 17060785), (14, 14623530), (15, 13648628), (20, 10236471), (21, 9749020), (28, 7311765), (30, 6824314), (35, 5849412), (42, 4874510), (60, 3412157), (61, 3356220), (70, 2924706), (84, 2437255), (105, 1949804), (122, 1678110), (131, 1562820), (140, 1462353), (183, 1118740), (210, 974902), (244, 839055), (262, 781410), (305, 671244), (366, 559370), (393, 520940), (420, 487451), (427, 479460), (524, 390705), (610, 335622), (655, 312564), (732, 279685), (786, 260470), (854, 239730), (915, 223748), (917, 223260), (1220, 167811), (1281, 159820), (1310, 156282), (1572, 130235), (1708, 119865), (1830, 111874), (1834, 111630), (1965, 104188), (2135, 95892), (2562, 79910), (2620, 78141), (2751, 74420), (3660, 55937), (3668, 55815), (3721, 55020), (3930, 52094), (4270, 47946), (4585, 44652), (5124, 39955), (5502, 37210), (6405, 31964), (7442, 27510), (7860, 26047), (7991, 25620), (8540, 23973), (9170, 22326), (11004, 18605), (11163, 18340), (12810, 15982), (13755, 14884)]