21151550

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{271}}^1$

素因数の和:513

約数の個数: 48

約数和(自身を含む): 45330432

約数和(自身を除く): 24178882

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, 223, 271, 350, 446, 542, 1115, 1355, 1561, 1897, 2230, 2710, 3122, 3794, 5575, 6775, 7805, 9485, 11150, 13550, 15610, 18970, 39025, 47425, 60433, 78050, 94850, 120866, 302165, 423031, 604330, 846062, 1510825, 2115155, 3021650, 4230310, 10575775, 21151550]

約数ペア:

[(1, 21151550), (2, 10575775), (5, 4230310), (7, 3021650), (10, 2115155), (14, 1510825), (25, 846062), (35, 604330), (50, 423031), (70, 302165), (175, 120866), (223, 94850), (271, 78050), (350, 60433), (446, 47425), (542, 39025), (1115, 18970), (1355, 15610), (1561, 13550), (1897, 11150), (2230, 9485), (2710, 7805), (3122, 6775), (3794, 5575)]