161653960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{1061}}^1$

素因数の和:1378

約数の個数: 64

約数和(自身を含む): 393407280

約数和(自身を除く): 231753320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 293, 520, 586, 1061, 1172, 1465, 2122, 2344, 2930, 3809, 4244, 5305, 5860, 7618, 8488, 10610, 11720, 13793, 15236, 19045, 21220, 27586, 30472, 38090, 42440, 55172, 68965, 76180, 110344, 137930, 152360, 275860, 310873, 551720, 621746, 1243492, 1554365, 2486984, 3108730, 4041349, 6217460, 8082698, 12434920, 16165396, 20206745, 32330792, 40413490, 80826980, 161653960]

約数ペア:

[(1, 161653960), (2, 80826980), (4, 40413490), (5, 32330792), (8, 20206745), (10, 16165396), (13, 12434920), (20, 8082698), (26, 6217460), (40, 4041349), (52, 3108730), (65, 2486984), (104, 1554365), (130, 1243492), (260, 621746), (293, 551720), (520, 310873), (586, 275860), (1061, 152360), (1172, 137930), (1465, 110344), (2122, 76180), (2344, 68965), (2930, 55172), (3809, 42440), (4244, 38090), (5305, 30472), (5860, 27586), (7618, 21220), (8488, 19045), (10610, 15236), (11720, 13793)]