19994380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:335

約数の個数: 96

約数和(自身を含む): 52641792

約数和(自身を除く): 32647412

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 31, 34, 35, 62, 68, 70, 85, 119, 124, 140, 155, 170, 217, 238, 271, 310, 340, 434, 476, 527, 542, 595, 620, 868, 1054, 1084, 1085, 1190, 1355, 1897, 2108, 2170, 2380, 2635, 2710, 3689, 3794, 4340, 4607, 5270, 5420, 7378, 7588, 8401, 9214, 9485, 10540, 14756, 16802, 18428, 18445, 18970, 23035, 32249, 33604, 36890, 37940, 42005, 46070, 58807, 64498, 73780, 84010, 92140, 117614, 128996, 142817, 161245, 168020, 235228, 285634, 294035, 322490, 571268, 588070, 644980, 714085, 999719, 1176140, 1428170, 1999438, 2856340, 3998876, 4998595, 9997190, 19994380]

約数ペア:

[(1, 19994380), (2, 9997190), (4, 4998595), (5, 3998876), (7, 2856340), (10, 1999438), (14, 1428170), (17, 1176140), (20, 999719), (28, 714085), (31, 644980), (34, 588070), (35, 571268), (62, 322490), (68, 294035), (70, 285634), (85, 235228), (119, 168020), (124, 161245), (140, 142817), (155, 128996), (170, 117614), (217, 92140), (238, 84010), (271, 73780), (310, 64498), (340, 58807), (434, 46070), (476, 42005), (527, 37940), (542, 36890), (595, 33604), (620, 32249), (868, 23035), (1054, 18970), (1084, 18445), (1085, 18428), (1190, 16802), (1355, 14756), (1897, 10540), (2108, 9485), (2170, 9214), (2380, 8401), (2635, 7588), (2710, 7378), (3689, 5420), (3794, 5270), (4340, 4607)]