215705150

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{197}}^1\times {\mathrm{359}}^1$

素因数の和:629

約数の個数: 48

約数和(自身を含む): 411000480

約数和(自身を除く): 195295330

約数列:

[1, 2, 5, 10, 25, 50, 61, 122, 197, 305, 359, 394, 610, 718, 985, 1525, 1795, 1970, 3050, 3590, 4925, 8975, 9850, 12017, 17950, 21899, 24034, 43798, 60085, 70723, 109495, 120170, 141446, 218990, 300425, 353615, 547475, 600850, 707230, 1094950, 1768075, 3536150, 4314103, 8628206, 21570515, 43141030, 107852575, 215705150]

約数ペア:

[(1, 215705150), (2, 107852575), (5, 43141030), (10, 21570515), (25, 8628206), (50, 4314103), (61, 3536150), (122, 1768075), (197, 1094950), (305, 707230), (359, 600850), (394, 547475), (610, 353615), (718, 300425), (985, 218990), (1525, 141446), (1795, 120170), (1970, 109495), (3050, 70723), (3590, 60085), (4925, 43798), (8975, 24034), (9850, 21899), (12017, 17950)]