21216400

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:137

約数の個数: 120

約数和(自身を含む): 55353600

約数和(自身を除く): 34137200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 31, 40, 50, 58, 59, 62, 80, 100, 116, 118, 124, 145, 155, 200, 232, 236, 248, 290, 295, 310, 400, 464, 472, 496, 580, 590, 620, 725, 775, 899, 944, 1160, 1180, 1240, 1450, 1475, 1550, 1711, 1798, 1829, 2320, 2360, 2480, 2900, 2950, 3100, 3422, 3596, 3658, 4495, 4720, 5800, 5900, 6200, 6844, 7192, 7316, 8555, 8990, 9145, 11600, 11800, 12400, 13688, 14384, 14632, 17110, 17980, 18290, 22475, 23600, 27376, 29264, 34220, 35960, 36580, 42775, 44950, 45725, 53041, 68440, 71920, 73160, 85550, 89900, 91450, 106082, 136880, 146320, 171100, 179800, 182900, 212164, 265205, 342200, 359600, 365800, 424328, 530410, 684400, 731600, 848656, 1060820, 1326025, 2121640, 2652050, 4243280, 5304100, 10608200, 21216400]

約数ペア:

[(1, 21216400), (2, 10608200), (4, 5304100), (5, 4243280), (8, 2652050), (10, 2121640), (16, 1326025), (20, 1060820), (25, 848656), (29, 731600), (31, 684400), (40, 530410), (50, 424328), (58, 365800), (59, 359600), (62, 342200), (80, 265205), (100, 212164), (116, 182900), (118, 179800), (124, 171100), (145, 146320), (155, 136880), (200, 106082), (232, 91450), (236, 89900), (248, 85550), (290, 73160), (295, 71920), (310, 68440), (400, 53041), (464, 45725), (472, 44950), (496, 42775), (580, 36580), (590, 35960), (620, 34220), (725, 29264), (775, 27376), (899, 23600), (944, 22475), (1160, 18290), (1180, 17980), (1240, 17110), (1450, 14632), (1475, 14384), (1550, 13688), (1711, 12400), (1798, 11800), (1829, 11600), (2320, 9145), (2360, 8990), (2480, 8555), (2900, 7316), (2950, 7192), (3100, 6844), (3422, 6200), (3596, 5900), (3658, 5800), (4495, 4720)]