38727680

素因数分解:

$2^{12}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:121

約数の個数: 104

約数和(自身を含む): 97505664

約数和(自身を除く): 58777984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 61, 62, 64, 80, 122, 124, 128, 155, 160, 244, 248, 256, 305, 310, 320, 488, 496, 512, 610, 620, 640, 976, 992, 1024, 1220, 1240, 1280, 1891, 1952, 1984, 2048, 2440, 2480, 2560, 3782, 3904, 3968, 4096, 4880, 4960, 5120, 7564, 7808, 7936, 9455, 9760, 9920, 10240, 15128, 15616, 15872, 18910, 19520, 19840, 20480, 30256, 31232, 31744, 37820, 39040, 39680, 60512, 62464, 63488, 75640, 78080, 79360, 121024, 124928, 126976, 151280, 156160, 158720, 242048, 249856, 302560, 312320, 317440, 484096, 605120, 624640, 634880, 968192, 1210240, 1249280, 1936384, 2420480, 3872768, 4840960, 7745536, 9681920, 19363840, 38727680]

約数ペア:

[(1, 38727680), (2, 19363840), (4, 9681920), (5, 7745536), (8, 4840960), (10, 3872768), (16, 2420480), (20, 1936384), (31, 1249280), (32, 1210240), (40, 968192), (61, 634880), (62, 624640), (64, 605120), (80, 484096), (122, 317440), (124, 312320), (128, 302560), (155, 249856), (160, 242048), (244, 158720), (248, 156160), (256, 151280), (305, 126976), (310, 124928), (320, 121024), (488, 79360), (496, 78080), (512, 75640), (610, 63488), (620, 62464), (640, 60512), (976, 39680), (992, 39040), (1024, 37820), (1220, 31744), (1240, 31232), (1280, 30256), (1891, 20480), (1952, 19840), (1984, 19520), (2048, 18910), (2440, 15872), (2480, 15616), (2560, 15128), (3782, 10240), (3904, 9920), (3968, 9760), (4096, 9455), (4880, 7936), (4960, 7808), (5120, 7564)]