40913920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:217

約数の個数: 88

約数和(自身を含む): 100515888

約数和(自身を除く): 59601968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 131, 160, 244, 256, 262, 305, 320, 488, 512, 524, 610, 640, 655, 976, 1024, 1048, 1220, 1280, 1310, 1952, 2096, 2440, 2560, 2620, 3904, 4192, 4880, 5120, 5240, 7808, 7991, 8384, 9760, 10480, 15616, 15982, 16768, 19520, 20960, 31232, 31964, 33536, 39040, 39955, 41920, 62464, 63928, 67072, 78080, 79910, 83840, 127856, 134144, 156160, 159820, 167680, 255712, 312320, 319640, 335360, 511424, 639280, 670720, 1022848, 1278560, 2045696, 2557120, 4091392, 5114240, 8182784, 10228480, 20456960, 40913920]

約数ペア:

[(1, 40913920), (2, 20456960), (4, 10228480), (5, 8182784), (8, 5114240), (10, 4091392), (16, 2557120), (20, 2045696), (32, 1278560), (40, 1022848), (61, 670720), (64, 639280), (80, 511424), (122, 335360), (128, 319640), (131, 312320), (160, 255712), (244, 167680), (256, 159820), (262, 156160), (305, 134144), (320, 127856), (488, 83840), (512, 79910), (524, 78080), (610, 67072), (640, 63928), (655, 62464), (976, 41920), (1024, 39955), (1048, 39040), (1220, 33536), (1280, 31964), (1310, 31232), (1952, 20960), (2096, 19520), (2440, 16768), (2560, 15982), (2620, 15616), (3904, 10480), (4192, 9760), (4880, 8384), (5120, 7991), (5240, 7808)]