309821440

素因数分解:

$2^{15}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:127

約数の個数: 128

約数和(自身を含む): 780128640

約数和(自身を除く): 470307200

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, 8192, 9455, 9760, 9920, 10240, 15128, 15616, 15872, 16384, 18910, 19520, 19840, 20480, 30256, 31232, 31744, 32768, 37820, 39040, 39680, 40960, 60512, 62464, 63488, 75640, 78080, 79360, 81920, 121024, 124928, 126976, 151280, 156160, 158720, 163840, 242048, 249856, 253952, 302560, 312320, 317440, 484096, 499712, 507904, 605120, 624640, 634880, 968192, 999424, 1015808, 1210240, 1249280, 1269760, 1936384, 1998848, 2420480, 2498560, 2539520, 3872768, 4840960, 4997120, 5079040, 7745536, 9681920, 9994240, 15491072, 19363840, 30982144, 38727680, 61964288, 77455360, 154910720, 309821440]

約数ペア:

[(1, 309821440), (2, 154910720), (4, 77455360), (5, 61964288), (8, 38727680), (10, 30982144), (16, 19363840), (20, 15491072), (31, 9994240), (32, 9681920), (40, 7745536), (61, 5079040), (62, 4997120), (64, 4840960), (80, 3872768), (122, 2539520), (124, 2498560), (128, 2420480), (155, 1998848), (160, 1936384), (244, 1269760), (248, 1249280), (256, 1210240), (305, 1015808), (310, 999424), (320, 968192), (488, 634880), (496, 624640), (512, 605120), (610, 507904), (620, 499712), (640, 484096), (976, 317440), (992, 312320), (1024, 302560), (1220, 253952), (1240, 249856), (1280, 242048), (1891, 163840), (1952, 158720), (1984, 156160), (2048, 151280), (2440, 126976), (2480, 124928), (2560, 121024), (3782, 81920), (3904, 79360), (3968, 78080), (4096, 75640), (4880, 63488), (4960, 62464), (5120, 60512), (7564, 40960), (7808, 39680), (7936, 39040), (8192, 37820), (9455, 32768), (9760, 31744), (9920, 31232), (10240, 30256), (15128, 20480), (15616, 19840), (15872, 19520), (16384, 18910)]