19876220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 52459008

約数和(自身を除く): 32582788

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 67, 70, 91, 130, 134, 140, 163, 182, 260, 268, 326, 335, 364, 455, 469, 652, 670, 815, 871, 910, 938, 1141, 1340, 1630, 1742, 1820, 1876, 2119, 2282, 2345, 3260, 3484, 4238, 4355, 4564, 4690, 5705, 6097, 8476, 8710, 9380, 10595, 10921, 11410, 12194, 14833, 17420, 21190, 21842, 22820, 24388, 29666, 30485, 42380, 43684, 54605, 59332, 60970, 74165, 76447, 109210, 121940, 141973, 148330, 152894, 218420, 283946, 296660, 305788, 382235, 567892, 709865, 764470, 993811, 1419730, 1528940, 1987622, 2839460, 3975244, 4969055, 9938110, 19876220]

約数ペア:

[(1, 19876220), (2, 9938110), (4, 4969055), (5, 3975244), (7, 2839460), (10, 1987622), (13, 1528940), (14, 1419730), (20, 993811), (26, 764470), (28, 709865), (35, 567892), (52, 382235), (65, 305788), (67, 296660), (70, 283946), (91, 218420), (130, 152894), (134, 148330), (140, 141973), (163, 121940), (182, 109210), (260, 76447), (268, 74165), (326, 60970), (335, 59332), (364, 54605), (455, 43684), (469, 42380), (652, 30485), (670, 29666), (815, 24388), (871, 22820), (910, 21842), (938, 21190), (1141, 17420), (1340, 14833), (1630, 12194), (1742, 11410), (1820, 10921), (1876, 10595), (2119, 9380), (2282, 8710), (2345, 8476), (3260, 6097), (3484, 5705), (4238, 4690), (4355, 4564)]