21493290

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7873}}^1$

素因数の和:7903

約数の個数: 64

約数和(自身を含む): 63495936

約数和(自身を除く): 42002646

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 182, 195, 210, 273, 390, 455, 546, 910, 1365, 2730, 7873, 15746, 23619, 39365, 47238, 55111, 78730, 102349, 110222, 118095, 165333, 204698, 236190, 275555, 307047, 330666, 511745, 551110, 614094, 716443, 826665, 1023490, 1432886, 1535235, 1653330, 2149329, 3070470, 3582215, 4298658, 7164430, 10746645, 21493290]

約数ペア:

[(1, 21493290), (2, 10746645), (3, 7164430), (5, 4298658), (6, 3582215), (7, 3070470), (10, 2149329), (13, 1653330), (14, 1535235), (15, 1432886), (21, 1023490), (26, 826665), (30, 716443), (35, 614094), (39, 551110), (42, 511745), (65, 330666), (70, 307047), (78, 275555), (91, 236190), (105, 204698), (130, 165333), (182, 118095), (195, 110222), (210, 102349), (273, 78730), (390, 55111), (455, 47238), (546, 39365), (910, 23619), (1365, 15746), (2730, 7873)]