21315700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{823}}^1$

素因数の和:881

約数の個数: 72

約数和(自身を含む): 54357632

約数和(自身を除く): 33041932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 37, 50, 70, 74, 100, 140, 148, 175, 185, 259, 350, 370, 518, 700, 740, 823, 925, 1036, 1295, 1646, 1850, 2590, 3292, 3700, 4115, 5180, 5761, 6475, 8230, 11522, 12950, 16460, 20575, 23044, 25900, 28805, 30451, 41150, 57610, 60902, 82300, 115220, 121804, 144025, 152255, 213157, 288050, 304510, 426314, 576100, 609020, 761275, 852628, 1065785, 1522550, 2131570, 3045100, 4263140, 5328925, 10657850, 21315700]

約数ペア:

[(1, 21315700), (2, 10657850), (4, 5328925), (5, 4263140), (7, 3045100), (10, 2131570), (14, 1522550), (20, 1065785), (25, 852628), (28, 761275), (35, 609020), (37, 576100), (50, 426314), (70, 304510), (74, 288050), (100, 213157), (140, 152255), (148, 144025), (175, 121804), (185, 115220), (259, 82300), (350, 60902), (370, 57610), (518, 41150), (700, 30451), (740, 28805), (823, 25900), (925, 23044), (1036, 20575), (1295, 16460), (1646, 12950), (1850, 11522), (2590, 8230), (3292, 6475), (3700, 5761), (4115, 5180)]