19899684

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:442

約数の個数: 108

約数和(自身を含む): 60687900

約数和(自身を除く): 40788216

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 29, 36, 42, 49, 58, 63, 84, 87, 98, 116, 126, 147, 174, 196, 203, 252, 261, 294, 348, 389, 406, 441, 522, 588, 609, 778, 812, 882, 1044, 1167, 1218, 1421, 1556, 1764, 1827, 2334, 2436, 2723, 2842, 3501, 3654, 4263, 4668, 5446, 5684, 7002, 7308, 8169, 8526, 10892, 11281, 12789, 14004, 16338, 17052, 19061, 22562, 24507, 25578, 32676, 33843, 38122, 45124, 49014, 51156, 57183, 67686, 76244, 78967, 98028, 101529, 114366, 135372, 157934, 171549, 203058, 228732, 236901, 315868, 343098, 406116, 473802, 552769, 686196, 710703, 947604, 1105538, 1421406, 1658307, 2211076, 2842812, 3316614, 4974921, 6633228, 9949842, 19899684]

約数ペア:

[(1, 19899684), (2, 9949842), (3, 6633228), (4, 4974921), (6, 3316614), (7, 2842812), (9, 2211076), (12, 1658307), (14, 1421406), (18, 1105538), (21, 947604), (28, 710703), (29, 686196), (36, 552769), (42, 473802), (49, 406116), (58, 343098), (63, 315868), (84, 236901), (87, 228732), (98, 203058), (116, 171549), (126, 157934), (147, 135372), (174, 114366), (196, 101529), (203, 98028), (252, 78967), (261, 76244), (294, 67686), (348, 57183), (389, 51156), (406, 49014), (441, 45124), (522, 38122), (588, 33843), (609, 32676), (778, 25578), (812, 24507), (882, 22562), (1044, 19061), (1167, 17052), (1218, 16338), (1421, 14004), (1556, 12789), (1764, 11281), (1827, 10892), (2334, 8526), (2436, 8169), (2723, 7308), (2842, 7002), (3501, 5684), (3654, 5446), (4263, 4668)]