19988280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4271}}^1$

素因数の和:4301

約数の個数: 96

約数和(自身を含む): 69975360

約数和(自身を除く): 49987080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4271, 4680, 8542, 12813, 17084, 21355, 25626, 34168, 38439, 42710, 51252, 55523, 64065, 76878, 85420, 102504, 111046, 128130, 153756, 166569, 170840, 192195, 222092, 256260, 277615, 307512, 333138, 384390, 444184, 499707, 512520, 555230, 666276, 768780, 832845, 999414, 1110460, 1332552, 1537560, 1665690, 1998828, 2220920, 2498535, 3331380, 3997656, 4997070, 6662760, 9994140, 19988280]

約数ペア:

[(1, 19988280), (2, 9994140), (3, 6662760), (4, 4997070), (5, 3997656), (6, 3331380), (8, 2498535), (9, 2220920), (10, 1998828), (12, 1665690), (13, 1537560), (15, 1332552), (18, 1110460), (20, 999414), (24, 832845), (26, 768780), (30, 666276), (36, 555230), (39, 512520), (40, 499707), (45, 444184), (52, 384390), (60, 333138), (65, 307512), (72, 277615), (78, 256260), (90, 222092), (104, 192195), (117, 170840), (120, 166569), (130, 153756), (156, 128130), (180, 111046), (195, 102504), (234, 85420), (260, 76878), (312, 64065), (360, 55523), (390, 51252), (468, 42710), (520, 38439), (585, 34168), (780, 25626), (936, 21355), (1170, 17084), (1560, 12813), (2340, 8542), (4271, 4680)]