21002820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{349}}^1$

素因数の和:437

約数の個数: 96

約数和(自身を含む): 63504000

約数和(自身を除く): 42501180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 59, 60, 68, 85, 102, 118, 170, 177, 204, 236, 255, 295, 340, 349, 354, 510, 590, 698, 708, 885, 1003, 1020, 1047, 1180, 1396, 1745, 1770, 2006, 2094, 3009, 3490, 3540, 4012, 4188, 5015, 5235, 5933, 6018, 6980, 10030, 10470, 11866, 12036, 15045, 17799, 20060, 20591, 20940, 23732, 29665, 30090, 35598, 41182, 59330, 60180, 61773, 71196, 82364, 88995, 102955, 118660, 123546, 177990, 205910, 247092, 308865, 350047, 355980, 411820, 617730, 700094, 1050141, 1235460, 1400188, 1750235, 2100282, 3500470, 4200564, 5250705, 7000940, 10501410, 21002820]

約数ペア:

[(1, 21002820), (2, 10501410), (3, 7000940), (4, 5250705), (5, 4200564), (6, 3500470), (10, 2100282), (12, 1750235), (15, 1400188), (17, 1235460), (20, 1050141), (30, 700094), (34, 617730), (51, 411820), (59, 355980), (60, 350047), (68, 308865), (85, 247092), (102, 205910), (118, 177990), (170, 123546), (177, 118660), (204, 102955), (236, 88995), (255, 82364), (295, 71196), (340, 61773), (349, 60180), (354, 59330), (510, 41182), (590, 35598), (698, 30090), (708, 29665), (885, 23732), (1003, 20940), (1020, 20591), (1047, 20060), (1180, 17799), (1396, 15045), (1745, 12036), (1770, 11866), (2006, 10470), (2094, 10030), (3009, 6980), (3490, 6018), (3540, 5933), (4012, 5235), (4188, 5015)]