204991640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:409

約数の個数: 128

約数和(自身を含む): 556416000

約数和(自身を除く): 351424360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 139, 140, 161, 184, 229, 230, 278, 280, 322, 458, 460, 556, 644, 695, 805, 916, 920, 973, 1112, 1145, 1288, 1390, 1603, 1610, 1832, 1946, 2290, 2780, 3197, 3206, 3220, 3892, 4580, 4865, 5267, 5560, 6394, 6412, 6440, 7784, 8015, 9160, 9730, 10534, 12788, 12824, 15985, 16030, 19460, 21068, 22379, 25576, 26335, 31831, 31970, 32060, 36869, 38920, 42136, 44758, 52670, 63662, 63940, 64120, 73738, 89516, 105340, 111895, 127324, 127880, 147476, 159155, 179032, 184345, 210680, 222817, 223790, 254648, 294952, 318310, 368690, 445634, 447580, 636620, 732113, 737380, 891268, 895160, 1114085, 1273240, 1464226, 1474760, 1782536, 2228170, 2928452, 3660565, 4456340, 5124791, 5856904, 7321130, 8912680, 10249582, 14642260, 20499164, 25623955, 29284520, 40998328, 51247910, 102495820, 204991640]

約数ペア:

[(1, 204991640), (2, 102495820), (4, 51247910), (5, 40998328), (7, 29284520), (8, 25623955), (10, 20499164), (14, 14642260), (20, 10249582), (23, 8912680), (28, 7321130), (35, 5856904), (40, 5124791), (46, 4456340), (56, 3660565), (70, 2928452), (92, 2228170), (115, 1782536), (139, 1474760), (140, 1464226), (161, 1273240), (184, 1114085), (229, 895160), (230, 891268), (278, 737380), (280, 732113), (322, 636620), (458, 447580), (460, 445634), (556, 368690), (644, 318310), (695, 294952), (805, 254648), (916, 223790), (920, 222817), (973, 210680), (1112, 184345), (1145, 179032), (1288, 159155), (1390, 147476), (1603, 127880), (1610, 127324), (1832, 111895), (1946, 105340), (2290, 89516), (2780, 73738), (3197, 64120), (3206, 63940), (3220, 63662), (3892, 52670), (4580, 44758), (4865, 42136), (5267, 38920), (5560, 36869), (6394, 32060), (6412, 31970), (6440, 31831), (7784, 26335), (8015, 25576), (9160, 22379), (9730, 21068), (10534, 19460), (12788, 16030), (12824, 15985)]