19968984

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:350

約数の個数: 128

約数和(自身を含む): 64972800

約数和(自身を除く): 45003816

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 47, 54, 56, 63, 72, 84, 94, 108, 126, 141, 168, 188, 189, 216, 252, 281, 282, 329, 376, 378, 423, 504, 562, 564, 658, 756, 843, 846, 987, 1124, 1128, 1269, 1316, 1512, 1686, 1692, 1967, 1974, 2248, 2529, 2538, 2632, 2961, 3372, 3384, 3934, 3948, 5058, 5076, 5901, 5922, 6744, 7587, 7868, 7896, 8883, 10116, 10152, 11802, 11844, 13207, 15174, 15736, 17703, 17766, 20232, 23604, 23688, 26414, 30348, 35406, 35532, 39621, 47208, 52828, 53109, 60696, 70812, 71064, 79242, 92449, 105656, 106218, 118863, 141624, 158484, 184898, 212436, 237726, 277347, 316968, 356589, 369796, 424872, 475452, 554694, 713178, 739592, 832041, 950904, 1109388, 1426356, 1664082, 2218776, 2496123, 2852712, 3328164, 4992246, 6656328, 9984492, 19968984]

約数ペア:

[(1, 19968984), (2, 9984492), (3, 6656328), (4, 4992246), (6, 3328164), (7, 2852712), (8, 2496123), (9, 2218776), (12, 1664082), (14, 1426356), (18, 1109388), (21, 950904), (24, 832041), (27, 739592), (28, 713178), (36, 554694), (42, 475452), (47, 424872), (54, 369796), (56, 356589), (63, 316968), (72, 277347), (84, 237726), (94, 212436), (108, 184898), (126, 158484), (141, 141624), (168, 118863), (188, 106218), (189, 105656), (216, 92449), (252, 79242), (281, 71064), (282, 70812), (329, 60696), (376, 53109), (378, 52828), (423, 47208), (504, 39621), (562, 35532), (564, 35406), (658, 30348), (756, 26414), (843, 23688), (846, 23604), (987, 20232), (1124, 17766), (1128, 17703), (1269, 15736), (1316, 15174), (1512, 13207), (1686, 11844), (1692, 11802), (1967, 10152), (1974, 10116), (2248, 8883), (2529, 7896), (2538, 7868), (2632, 7587), (2961, 6744), (3372, 5922), (3384, 5901), (3934, 5076), (3948, 5058)]