208398420

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{653}}^1$

素因数の和:871

約数の個数: 120

約数和(自身を含む): 658078344

約数和(自身を除く): 449679924

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 197, 270, 324, 394, 405, 540, 591, 653, 788, 810, 985, 1182, 1306, 1620, 1773, 1959, 1970, 2364, 2612, 2955, 3265, 3546, 3918, 3940, 5319, 5877, 5910, 6530, 7092, 7836, 8865, 9795, 10638, 11754, 11820, 13060, 15957, 17631, 17730, 19590, 21276, 23508, 26595, 29385, 31914, 35262, 35460, 39180, 52893, 53190, 58770, 63828, 70524, 79785, 88155, 105786, 106380, 117540, 128641, 159570, 176310, 211572, 257282, 264465, 319140, 352620, 385923, 514564, 528930, 643205, 771846, 1057860, 1157769, 1286410, 1543692, 1929615, 2315538, 2572820, 3473307, 3859230, 4631076, 5788845, 6946614, 7718460, 10419921, 11577690, 13893228, 17366535, 20839842, 23155380, 34733070, 41679684, 52099605, 69466140, 104199210, 208398420]

約数ペア:

[(1, 208398420), (2, 104199210), (3, 69466140), (4, 52099605), (5, 41679684), (6, 34733070), (9, 23155380), (10, 20839842), (12, 17366535), (15, 13893228), (18, 11577690), (20, 10419921), (27, 7718460), (30, 6946614), (36, 5788845), (45, 4631076), (54, 3859230), (60, 3473307), (81, 2572820), (90, 2315538), (108, 1929615), (135, 1543692), (162, 1286410), (180, 1157769), (197, 1057860), (270, 771846), (324, 643205), (394, 528930), (405, 514564), (540, 385923), (591, 352620), (653, 319140), (788, 264465), (810, 257282), (985, 211572), (1182, 176310), (1306, 159570), (1620, 128641), (1773, 117540), (1959, 106380), (1970, 105786), (2364, 88155), (2612, 79785), (2955, 70524), (3265, 63828), (3546, 58770), (3918, 53190), (3940, 52893), (5319, 39180), (5877, 35460), (5910, 35262), (6530, 31914), (7092, 29385), (7836, 26595), (8865, 23508), (9795, 21276), (10638, 19590), (11754, 17730), (11820, 17631), (13060, 15957)]