9899890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:104

約数の個数: 128

約数和(自身を含む): 25546752

約数和(自身を除く): 15646862

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 23, 26, 35, 43, 46, 55, 65, 70, 77, 86, 91, 110, 115, 130, 143, 154, 161, 182, 215, 230, 253, 286, 299, 301, 322, 385, 430, 455, 473, 506, 559, 598, 602, 715, 770, 805, 910, 946, 989, 1001, 1118, 1265, 1430, 1495, 1505, 1610, 1771, 1978, 2002, 2093, 2365, 2530, 2795, 2990, 3010, 3289, 3311, 3542, 3913, 4186, 4730, 4945, 5005, 5590, 6149, 6578, 6622, 6923, 7826, 8855, 9890, 10010, 10465, 10879, 12298, 12857, 13846, 16445, 16555, 17710, 19565, 20930, 21758, 23023, 25714, 30745, 32890, 33110, 34615, 39130, 43043, 46046, 54395, 61490, 64285, 69230, 76153, 86086, 89999, 108790, 115115, 128570, 141427, 152306, 179998, 215215, 230230, 282854, 380765, 430430, 449995, 707135, 761530, 899990, 989989, 1414270, 1979978, 4949945, 9899890]

約数ペア:

[(1, 9899890), (2, 4949945), (5, 1979978), (7, 1414270), (10, 989989), (11, 899990), (13, 761530), (14, 707135), (22, 449995), (23, 430430), (26, 380765), (35, 282854), (43, 230230), (46, 215215), (55, 179998), (65, 152306), (70, 141427), (77, 128570), (86, 115115), (91, 108790), (110, 89999), (115, 86086), (130, 76153), (143, 69230), (154, 64285), (161, 61490), (182, 54395), (215, 46046), (230, 43043), (253, 39130), (286, 34615), (299, 33110), (301, 32890), (322, 30745), (385, 25714), (430, 23023), (455, 21758), (473, 20930), (506, 19565), (559, 17710), (598, 16555), (602, 16445), (715, 13846), (770, 12857), (805, 12298), (910, 10879), (946, 10465), (989, 10010), (1001, 9890), (1118, 8855), (1265, 7826), (1430, 6923), (1495, 6622), (1505, 6578), (1610, 6149), (1771, 5590), (1978, 5005), (2002, 4945), (2093, 4730), (2365, 4186), (2530, 3913), (2795, 3542), (2990, 3311), (3010, 3289)]