19980828

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:312

約数の個数: 108

約数和(自身を含む): 60252192

約数和(自身を除く): 40271364

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 47, 49, 63, 84, 94, 98, 126, 141, 147, 188, 196, 241, 252, 282, 294, 329, 423, 441, 482, 564, 588, 658, 723, 846, 882, 964, 987, 1316, 1446, 1687, 1692, 1764, 1974, 2169, 2303, 2892, 2961, 3374, 3948, 4338, 4606, 5061, 5922, 6748, 6909, 8676, 9212, 10122, 11327, 11809, 11844, 13818, 15183, 20244, 20727, 22654, 23618, 27636, 30366, 33981, 35427, 41454, 45308, 47236, 60732, 67962, 70854, 79289, 82908, 101943, 106281, 135924, 141708, 158578, 203886, 212562, 237867, 317156, 407772, 425124, 475734, 555023, 713601, 951468, 1110046, 1427202, 1665069, 2220092, 2854404, 3330138, 4995207, 6660276, 9990414, 19980828]

約数ペア:

[(1, 19980828), (2, 9990414), (3, 6660276), (4, 4995207), (6, 3330138), (7, 2854404), (9, 2220092), (12, 1665069), (14, 1427202), (18, 1110046), (21, 951468), (28, 713601), (36, 555023), (42, 475734), (47, 425124), (49, 407772), (63, 317156), (84, 237867), (94, 212562), (98, 203886), (126, 158578), (141, 141708), (147, 135924), (188, 106281), (196, 101943), (241, 82908), (252, 79289), (282, 70854), (294, 67962), (329, 60732), (423, 47236), (441, 45308), (482, 41454), (564, 35427), (588, 33981), (658, 30366), (723, 27636), (846, 23618), (882, 22654), (964, 20727), (987, 20244), (1316, 15183), (1446, 13818), (1687, 11844), (1692, 11809), (1764, 11327), (1974, 10122), (2169, 9212), (2303, 8676), (2892, 6909), (2961, 6748), (3374, 5922), (3948, 5061), (4338, 4606)]