71787940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:210

約数の個数: 144

約数和(自身を含む): 193052160

約数和(自身を除く): 121264220

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 31, 34, 35, 49, 62, 68, 70, 85, 98, 119, 124, 139, 140, 155, 170, 196, 217, 238, 245, 278, 310, 340, 434, 476, 490, 527, 556, 595, 620, 695, 833, 868, 973, 980, 1054, 1085, 1190, 1390, 1519, 1666, 1946, 2108, 2170, 2363, 2380, 2635, 2780, 3038, 3332, 3689, 3892, 4165, 4309, 4340, 4726, 4865, 5270, 6076, 6811, 7378, 7595, 8330, 8618, 9452, 9730, 10540, 11815, 13622, 14756, 15190, 16541, 16660, 17236, 18445, 19460, 21545, 23630, 25823, 27244, 30163, 30380, 33082, 34055, 36890, 43090, 47260, 51646, 60326, 66164, 68110, 73253, 73780, 82705, 86180, 103292, 115787, 120652, 129115, 136220, 146506, 150815, 165410, 211141, 231574, 258230, 293012, 301630, 330820, 366265, 422282, 463148, 512771, 516460, 578935, 603260, 732530, 844564, 1025542, 1055705, 1157870, 1465060, 2051084, 2111410, 2315740, 2563855, 3589397, 4222820, 5127710, 7178794, 10255420, 14357588, 17946985, 35893970, 71787940]

約数ペア:

[(1, 71787940), (2, 35893970), (4, 17946985), (5, 14357588), (7, 10255420), (10, 7178794), (14, 5127710), (17, 4222820), (20, 3589397), (28, 2563855), (31, 2315740), (34, 2111410), (35, 2051084), (49, 1465060), (62, 1157870), (68, 1055705), (70, 1025542), (85, 844564), (98, 732530), (119, 603260), (124, 578935), (139, 516460), (140, 512771), (155, 463148), (170, 422282), (196, 366265), (217, 330820), (238, 301630), (245, 293012), (278, 258230), (310, 231574), (340, 211141), (434, 165410), (476, 150815), (490, 146506), (527, 136220), (556, 129115), (595, 120652), (620, 115787), (695, 103292), (833, 86180), (868, 82705), (973, 73780), (980, 73253), (1054, 68110), (1085, 66164), (1190, 60326), (1390, 51646), (1519, 47260), (1666, 43090), (1946, 36890), (2108, 34055), (2170, 33082), (2363, 30380), (2380, 30163), (2635, 27244), (2780, 25823), (3038, 23630), (3332, 21545), (3689, 19460), (3892, 18445), (4165, 17236), (4309, 16660), (4340, 16541), (4726, 15190), (4865, 14756), (5270, 13622), (6076, 11815), (6811, 10540), (7378, 9730), (7595, 9452), (8330, 8618)]