1619499520

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20407}}^1$

素因数の和:20461

約数の個数: 80

約数和(自身を含む): 4008457728

約数和(自身を除く): 2388958208

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, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 7936, 9920, 15872, 19840, 20407, 39680, 40814, 79360, 81628, 102035, 163256, 204070, 326512, 408140, 632617, 653024, 816280, 1265234, 1306048, 1632560, 2530468, 2612096, 3163085, 3265120, 5060936, 5224192, 6326170, 6530240, 10121872, 10448384, 12652340, 13060480, 20243744, 25304680, 26120960, 40487488, 50609360, 52241920, 80974976, 101218720, 161949952, 202437440, 323899904, 404874880, 809749760, 1619499520]

約数ペア:

[(1, 1619499520), (2, 809749760), (4, 404874880), (5, 323899904), (8, 202437440), (10, 161949952), (16, 101218720), (20, 80974976), (31, 52241920), (32, 50609360), (40, 40487488), (62, 26120960), (64, 25304680), (80, 20243744), (124, 13060480), (128, 12652340), (155, 10448384), (160, 10121872), (248, 6530240), (256, 6326170), (310, 5224192), (320, 5060936), (496, 3265120), (512, 3163085), (620, 2612096), (640, 2530468), (992, 1632560), (1240, 1306048), (1280, 1265234), (1984, 816280), (2480, 653024), (2560, 632617), (3968, 408140), (4960, 326512), (7936, 204070), (9920, 163256), (15872, 102035), (19840, 81628), (20407, 79360), (39680, 40814)]