16891280

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:197

約数の個数: 120

約数和(自身を含む): 47496960

約数和(自身を除く): 30605680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 139, 140, 155, 196, 217, 245, 248, 278, 280, 310, 392, 434, 490, 496, 556, 560, 620, 695, 784, 868, 973, 980, 1085, 1112, 1240, 1390, 1519, 1736, 1946, 1960, 2170, 2224, 2480, 2780, 3038, 3472, 3892, 3920, 4309, 4340, 4865, 5560, 6076, 6811, 7595, 7784, 8618, 8680, 9730, 11120, 12152, 13622, 15190, 15568, 17236, 17360, 19460, 21545, 24304, 27244, 30163, 30380, 34055, 34472, 38920, 43090, 54488, 60326, 60760, 68110, 68944, 77840, 86180, 108976, 120652, 121520, 136220, 150815, 172360, 211141, 241304, 272440, 301630, 344720, 422282, 482608, 544880, 603260, 844564, 1055705, 1206520, 1689128, 2111410, 2413040, 3378256, 4222820, 8445640, 16891280]

約数ペア:

[(1, 16891280), (2, 8445640), (4, 4222820), (5, 3378256), (7, 2413040), (8, 2111410), (10, 1689128), (14, 1206520), (16, 1055705), (20, 844564), (28, 603260), (31, 544880), (35, 482608), (40, 422282), (49, 344720), (56, 301630), (62, 272440), (70, 241304), (80, 211141), (98, 172360), (112, 150815), (124, 136220), (139, 121520), (140, 120652), (155, 108976), (196, 86180), (217, 77840), (245, 68944), (248, 68110), (278, 60760), (280, 60326), (310, 54488), (392, 43090), (434, 38920), (490, 34472), (496, 34055), (556, 30380), (560, 30163), (620, 27244), (695, 24304), (784, 21545), (868, 19460), (973, 17360), (980, 17236), (1085, 15568), (1112, 15190), (1240, 13622), (1390, 12152), (1519, 11120), (1736, 9730), (1946, 8680), (1960, 8618), (2170, 7784), (2224, 7595), (2480, 6811), (2780, 6076), (3038, 5560), (3472, 4865), (3892, 4340), (3920, 4309)]