51454720

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{659}}^1$

素因数の和:741

約数の個数: 72

約数和(自身を含む): 125460720

約数和(自身を除く): 74006000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 659, 976, 1220, 1280, 1318, 1952, 2440, 2636, 3295, 3904, 4880, 5272, 6590, 7808, 9760, 10544, 13180, 15616, 19520, 21088, 26360, 39040, 40199, 42176, 52720, 78080, 80398, 84352, 105440, 160796, 168704, 200995, 210880, 321592, 401990, 421760, 643184, 803980, 843520, 1286368, 1607960, 2572736, 3215920, 5145472, 6431840, 10290944, 12863680, 25727360, 51454720]

約数ペア:

[(1, 51454720), (2, 25727360), (4, 12863680), (5, 10290944), (8, 6431840), (10, 5145472), (16, 3215920), (20, 2572736), (32, 1607960), (40, 1286368), (61, 843520), (64, 803980), (80, 643184), (122, 421760), (128, 401990), (160, 321592), (244, 210880), (256, 200995), (305, 168704), (320, 160796), (488, 105440), (610, 84352), (640, 80398), (659, 78080), (976, 52720), (1220, 42176), (1280, 40199), (1318, 39040), (1952, 26360), (2440, 21088), (2636, 19520), (3295, 15616), (3904, 13180), (4880, 10544), (5272, 9760), (6590, 7808)]