20199976960

素因数分解:

$2^{12}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31817}}^1$

素因数の和:31877

約数の個数: 104

約数和(自身を含む): 50039277696

約数和(自身を除く): 29839300736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1024, 1240, 1280, 1984, 2048, 2480, 2560, 3968, 4096, 4960, 5120, 7936, 9920, 10240, 15872, 19840, 20480, 31744, 31817, 39680, 63488, 63634, 79360, 126976, 127268, 158720, 159085, 254536, 317440, 318170, 509072, 634880, 636340, 986327, 1018144, 1272680, 1972654, 2036288, 2545360, 3945308, 4072576, 4931635, 5090720, 7890616, 8145152, 9863270, 10181440, 15781232, 16290304, 19726540, 20362880, 31562464, 32580608, 39453080, 40725760, 63124928, 65161216, 78906160, 81451520, 126249856, 130322432, 157812320, 162903040, 252499712, 315624640, 325806080, 504999424, 631249280, 651612160, 1009998848, 1262498560, 2019997696, 2524997120, 4039995392, 5049994240, 10099988480, 20199976960]

約数ペア:

[(1, 20199976960), (2, 10099988480), (4, 5049994240), (5, 4039995392), (8, 2524997120), (10, 2019997696), (16, 1262498560), (20, 1009998848), (31, 651612160), (32, 631249280), (40, 504999424), (62, 325806080), (64, 315624640), (80, 252499712), (124, 162903040), (128, 157812320), (155, 130322432), (160, 126249856), (248, 81451520), (256, 78906160), (310, 65161216), (320, 63124928), (496, 40725760), (512, 39453080), (620, 32580608), (640, 31562464), (992, 20362880), (1024, 19726540), (1240, 16290304), (1280, 15781232), (1984, 10181440), (2048, 9863270), (2480, 8145152), (2560, 7890616), (3968, 5090720), (4096, 4931635), (4960, 4072576), (5120, 3945308), (7936, 2545360), (9920, 2036288), (10240, 1972654), (15872, 1272680), (19840, 1018144), (20480, 986327), (31744, 636340), (31817, 634880), (39680, 509072), (63488, 318170), (63634, 317440), (79360, 254536), (126976, 159085), (127268, 158720)]