638612896

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1$

素因数の和:342

約数の個数: 96

約数和(自身を含む): 1353203712

約数和(自身を除く): 714590816

約数列:

[1, 2, 4, 8, 16, 31, 32, 37, 62, 74, 124, 127, 137, 148, 248, 254, 274, 296, 496, 508, 548, 592, 992, 1016, 1096, 1147, 1184, 2032, 2192, 2294, 3937, 4064, 4247, 4384, 4588, 4699, 5069, 7874, 8494, 9176, 9398, 10138, 15748, 16988, 17399, 18352, 18796, 20276, 31496, 33976, 34798, 36704, 37592, 40552, 62992, 67952, 69596, 75184, 81104, 125984, 135904, 139192, 145669, 150368, 157139, 162208, 278384, 291338, 314278, 539369, 556768, 582676, 628556, 643763, 1078738, 1165352, 1257112, 1287526, 2157476, 2330704, 2514224, 2575052, 4314952, 4661408, 5028448, 5150104, 8629904, 10300208, 17259808, 19956653, 20600416, 39913306, 79826612, 159653224, 319306448, 638612896]

約数ペア:

[(1, 638612896), (2, 319306448), (4, 159653224), (8, 79826612), (16, 39913306), (31, 20600416), (32, 19956653), (37, 17259808), (62, 10300208), (74, 8629904), (124, 5150104), (127, 5028448), (137, 4661408), (148, 4314952), (248, 2575052), (254, 2514224), (274, 2330704), (296, 2157476), (496, 1287526), (508, 1257112), (548, 1165352), (592, 1078738), (992, 643763), (1016, 628556), (1096, 582676), (1147, 556768), (1184, 539369), (2032, 314278), (2192, 291338), (2294, 278384), (3937, 162208), (4064, 157139), (4247, 150368), (4384, 145669), (4588, 139192), (4699, 135904), (5069, 125984), (7874, 81104), (8494, 75184), (9176, 69596), (9398, 67952), (10138, 62992), (15748, 40552), (16988, 37592), (17399, 36704), (18352, 34798), (18796, 33976), (20276, 31496)]