21131215210

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{389}}^1\times {\mathrm{1879}}^1$

素因数の和:2348

約数の個数: 96

約数和(自身を含む): 45135792000

約数和(自身を除く): 24004576790

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 59, 70, 98, 118, 245, 295, 389, 413, 490, 590, 778, 826, 1879, 1945, 2065, 2723, 2891, 3758, 3890, 4130, 5446, 5782, 9395, 13153, 13615, 14455, 18790, 19061, 22951, 26306, 27230, 28910, 38122, 45902, 65765, 92071, 95305, 110861, 114755, 131530, 160657, 184142, 190610, 221722, 229510, 321314, 460355, 554305, 730931, 776027, 803285, 920710, 1108610, 1124599, 1461862, 1552054, 1606570, 2249198, 3654655, 3880135, 5116517, 5432189, 5622995, 7309310, 7760270, 10233034, 10864378, 11245990, 25582585, 27160945, 35815619, 43124929, 51165170, 54321890, 71631238, 86249858, 179078095, 215624645, 301874503, 358156190, 431249290, 603749006, 1509372515, 2113121521, 3018745030, 4226243042, 10565607605, 21131215210]

約数ペア:

[(1, 21131215210), (2, 10565607605), (5, 4226243042), (7, 3018745030), (10, 2113121521), (14, 1509372515), (35, 603749006), (49, 431249290), (59, 358156190), (70, 301874503), (98, 215624645), (118, 179078095), (245, 86249858), (295, 71631238), (389, 54321890), (413, 51165170), (490, 43124929), (590, 35815619), (778, 27160945), (826, 25582585), (1879, 11245990), (1945, 10864378), (2065, 10233034), (2723, 7760270), (2891, 7309310), (3758, 5622995), (3890, 5432189), (4130, 5116517), (5446, 3880135), (5782, 3654655), (9395, 2249198), (13153, 1606570), (13615, 1552054), (14455, 1461862), (18790, 1124599), (19061, 1108610), (22951, 920710), (26306, 803285), (27230, 776027), (28910, 730931), (38122, 554305), (45902, 460355), (65765, 321314), (92071, 229510), (95305, 221722), (110861, 190610), (114755, 184142), (131530, 160657)]