21560250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:145

約数の個数: 128

約数和(自身を含む): 60652800

約数和(自身を除く): 39092550

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 19, 25, 30, 34, 38, 50, 51, 57, 75, 85, 89, 95, 102, 114, 125, 150, 170, 178, 190, 250, 255, 267, 285, 323, 375, 425, 445, 475, 510, 534, 570, 646, 750, 850, 890, 950, 969, 1275, 1335, 1425, 1513, 1615, 1691, 1938, 2125, 2225, 2375, 2550, 2670, 2850, 3026, 3230, 3382, 4250, 4450, 4539, 4750, 4845, 5073, 6375, 6675, 7125, 7565, 8075, 8455, 9078, 9690, 10146, 11125, 12750, 13350, 14250, 15130, 16150, 16910, 22250, 22695, 24225, 25365, 28747, 33375, 37825, 40375, 42275, 45390, 48450, 50730, 57494, 66750, 75650, 80750, 84550, 86241, 113475, 121125, 126825, 143735, 172482, 189125, 211375, 226950, 242250, 253650, 287470, 378250, 422750, 431205, 567375, 634125, 718675, 862410, 1134750, 1268250, 1437350, 2156025, 3593375, 4312050, 7186750, 10780125, 21560250]

約数ペア:

[(1, 21560250), (2, 10780125), (3, 7186750), (5, 4312050), (6, 3593375), (10, 2156025), (15, 1437350), (17, 1268250), (19, 1134750), (25, 862410), (30, 718675), (34, 634125), (38, 567375), (50, 431205), (51, 422750), (57, 378250), (75, 287470), (85, 253650), (89, 242250), (95, 226950), (102, 211375), (114, 189125), (125, 172482), (150, 143735), (170, 126825), (178, 121125), (190, 113475), (250, 86241), (255, 84550), (267, 80750), (285, 75650), (323, 66750), (375, 57494), (425, 50730), (445, 48450), (475, 45390), (510, 42275), (534, 40375), (570, 37825), (646, 33375), (750, 28747), (850, 25365), (890, 24225), (950, 22695), (969, 22250), (1275, 16910), (1335, 16150), (1425, 15130), (1513, 14250), (1615, 13350), (1691, 12750), (1938, 11125), (2125, 10146), (2225, 9690), (2375, 9078), (2550, 8455), (2670, 8075), (2850, 7565), (3026, 7125), (3230, 6675), (3382, 6375), (4250, 5073), (4450, 4845), (4539, 4750)]