221555145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{263}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 416047104

約数和(自身を除く): 194491959

約数列:

[1, 3, 5, 7, 15, 21, 35, 71, 105, 113, 213, 263, 339, 355, 497, 565, 789, 791, 1065, 1315, 1491, 1695, 1841, 2373, 2485, 3945, 3955, 5523, 7455, 8023, 9205, 11865, 18673, 24069, 27615, 29719, 40115, 56019, 56161, 89157, 93365, 120345, 130711, 148595, 168483, 208033, 280095, 280805, 392133, 445785, 624099, 653555, 842415, 1040165, 1960665, 2110049, 3120495, 6330147, 10550245, 14770343, 31650735, 44311029, 73851715, 221555145]

約数ペア:

[(1, 221555145), (3, 73851715), (5, 44311029), (7, 31650735), (15, 14770343), (21, 10550245), (35, 6330147), (71, 3120495), (105, 2110049), (113, 1960665), (213, 1040165), (263, 842415), (339, 653555), (355, 624099), (497, 445785), (565, 392133), (789, 280805), (791, 280095), (1065, 208033), (1315, 168483), (1491, 148595), (1695, 130711), (1841, 120345), (2373, 93365), (2485, 89157), (3945, 56161), (3955, 56019), (5523, 40115), (7455, 29719), (8023, 27615), (9205, 24069), (11865, 18673)]