18653440

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:112

約数の個数: 144

約数和(自身を含む): 51508800

約数和(自身を除く): 32855360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 59, 64, 65, 76, 80, 95, 104, 118, 128, 130, 152, 160, 190, 208, 236, 247, 256, 260, 295, 304, 320, 380, 416, 472, 494, 520, 590, 608, 640, 760, 767, 832, 944, 988, 1040, 1121, 1180, 1216, 1235, 1280, 1520, 1534, 1664, 1888, 1976, 2080, 2242, 2360, 2432, 2470, 3040, 3068, 3328, 3776, 3835, 3952, 4160, 4484, 4720, 4864, 4940, 5605, 6080, 6136, 7552, 7670, 7904, 8320, 8968, 9440, 9880, 11210, 12160, 12272, 14573, 15104, 15340, 15808, 16640, 17936, 18880, 19760, 22420, 24320, 24544, 29146, 30680, 31616, 35872, 37760, 39520, 44840, 49088, 58292, 61360, 63232, 71744, 72865, 75520, 79040, 89680, 98176, 116584, 122720, 143488, 145730, 158080, 179360, 196352, 233168, 245440, 286976, 291460, 316160, 358720, 466336, 490880, 582920, 717440, 932672, 981760, 1165840, 1434880, 1865344, 2331680, 3730688, 4663360, 9326720, 18653440]

約数ペア:

[(1, 18653440), (2, 9326720), (4, 4663360), (5, 3730688), (8, 2331680), (10, 1865344), (13, 1434880), (16, 1165840), (19, 981760), (20, 932672), (26, 717440), (32, 582920), (38, 490880), (40, 466336), (52, 358720), (59, 316160), (64, 291460), (65, 286976), (76, 245440), (80, 233168), (95, 196352), (104, 179360), (118, 158080), (128, 145730), (130, 143488), (152, 122720), (160, 116584), (190, 98176), (208, 89680), (236, 79040), (247, 75520), (256, 72865), (260, 71744), (295, 63232), (304, 61360), (320, 58292), (380, 49088), (416, 44840), (472, 39520), (494, 37760), (520, 35872), (590, 31616), (608, 30680), (640, 29146), (760, 24544), (767, 24320), (832, 22420), (944, 19760), (988, 18880), (1040, 17936), (1121, 16640), (1180, 15808), (1216, 15340), (1235, 15104), (1280, 14573), (1520, 12272), (1534, 12160), (1664, 11210), (1888, 9880), (1976, 9440), (2080, 8968), (2242, 8320), (2360, 7904), (2432, 7670), (2470, 7552), (3040, 6136), (3068, 6080), (3328, 5605), (3776, 4940), (3835, 4864), (3952, 4720), (4160, 4484)]