21865410

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{503}}^1$

素因数の和:549

約数の個数: 128

約数和(自身を含む): 69672960

約数和(自身を除く): 47807550

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 23, 27, 30, 35, 42, 45, 46, 54, 63, 69, 70, 90, 105, 115, 126, 135, 138, 161, 189, 207, 210, 230, 270, 315, 322, 345, 378, 414, 483, 503, 621, 630, 690, 805, 945, 966, 1006, 1035, 1242, 1449, 1509, 1610, 1890, 2070, 2415, 2515, 2898, 3018, 3105, 3521, 4347, 4527, 4830, 5030, 6210, 7042, 7245, 7545, 8694, 9054, 10563, 11569, 13581, 14490, 15090, 17605, 21126, 21735, 22635, 23138, 27162, 31689, 34707, 35210, 43470, 45270, 52815, 57845, 63378, 67905, 69414, 80983, 95067, 104121, 105630, 115690, 135810, 158445, 161966, 173535, 190134, 208242, 242949, 312363, 316890, 347070, 404915, 475335, 485898, 520605, 624726, 728847, 809830, 950670, 1041210, 1214745, 1457694, 1561815, 2186541, 2429490, 3123630, 3644235, 4373082, 7288470, 10932705, 21865410]

約数ペア:

[(1, 21865410), (2, 10932705), (3, 7288470), (5, 4373082), (6, 3644235), (7, 3123630), (9, 2429490), (10, 2186541), (14, 1561815), (15, 1457694), (18, 1214745), (21, 1041210), (23, 950670), (27, 809830), (30, 728847), (35, 624726), (42, 520605), (45, 485898), (46, 475335), (54, 404915), (63, 347070), (69, 316890), (70, 312363), (90, 242949), (105, 208242), (115, 190134), (126, 173535), (135, 161966), (138, 158445), (161, 135810), (189, 115690), (207, 105630), (210, 104121), (230, 95067), (270, 80983), (315, 69414), (322, 67905), (345, 63378), (378, 57845), (414, 52815), (483, 45270), (503, 43470), (621, 35210), (630, 34707), (690, 31689), (805, 27162), (945, 23138), (966, 22635), (1006, 21735), (1035, 21126), (1242, 17605), (1449, 15090), (1509, 14490), (1610, 13581), (1890, 11569), (2070, 10563), (2415, 9054), (2515, 8694), (2898, 7545), (3018, 7245), (3105, 7042), (3521, 6210), (4347, 5030), (4527, 4830)]