393109760

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{9907}}^1$

素因数の和:9959

約数の個数: 72

約数和(自身を含む): 972093696

約数和(自身を除く): 578983936

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, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9907, 9920, 19814, 19840, 39628, 39680, 49535, 79256, 99070, 158512, 198140, 307117, 317024, 396280, 614234, 634048, 792560, 1228468, 1268096, 1535585, 1585120, 2456936, 2536192, 3071170, 3170240, 4913872, 6142340, 6340480, 9827744, 12284680, 12680960, 19655488, 24569360, 39310976, 49138720, 78621952, 98277440, 196554880, 393109760]

約数ペア:

[(1, 393109760), (2, 196554880), (4, 98277440), (5, 78621952), (8, 49138720), (10, 39310976), (16, 24569360), (20, 19655488), (31, 12680960), (32, 12284680), (40, 9827744), (62, 6340480), (64, 6142340), (80, 4913872), (124, 3170240), (128, 3071170), (155, 2536192), (160, 2456936), (248, 1585120), (256, 1535585), (310, 1268096), (320, 1228468), (496, 792560), (620, 634048), (640, 614234), (992, 396280), (1240, 317024), (1280, 307117), (1984, 198140), (2480, 158512), (3968, 99070), (4960, 79256), (7936, 49535), (9907, 39680), (9920, 39628), (19814, 19840)]