19998342

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:478

約数の個数: 96

約数和(自身を含む): 55298880

約数和(自身を除く): 35300538

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 29, 39, 42, 58, 63, 78, 87, 91, 117, 126, 174, 182, 203, 234, 261, 273, 377, 406, 421, 522, 546, 609, 754, 819, 842, 1131, 1218, 1263, 1638, 1827, 2262, 2526, 2639, 2947, 3393, 3654, 3789, 5278, 5473, 5894, 6786, 7578, 7917, 8841, 10946, 12209, 15834, 16419, 17682, 23751, 24418, 26523, 32838, 36627, 38311, 47502, 49257, 53046, 73254, 76622, 85463, 98514, 109881, 114933, 158717, 170926, 219762, 229866, 256389, 317434, 344799, 476151, 512778, 689598, 769167, 952302, 1111019, 1428453, 1538334, 2222038, 2856906, 3333057, 6666114, 9999171, 19998342]

約数ペア:

[(1, 19998342), (2, 9999171), (3, 6666114), (6, 3333057), (7, 2856906), (9, 2222038), (13, 1538334), (14, 1428453), (18, 1111019), (21, 952302), (26, 769167), (29, 689598), (39, 512778), (42, 476151), (58, 344799), (63, 317434), (78, 256389), (87, 229866), (91, 219762), (117, 170926), (126, 158717), (174, 114933), (182, 109881), (203, 98514), (234, 85463), (261, 76622), (273, 73254), (377, 53046), (406, 49257), (421, 47502), (522, 38311), (546, 36627), (609, 32838), (754, 26523), (819, 24418), (842, 23751), (1131, 17682), (1218, 16419), (1263, 15834), (1638, 12209), (1827, 10946), (2262, 8841), (2526, 7917), (2639, 7578), (2947, 6786), (3393, 5894), (3654, 5473), (3789, 5278)]