30997760

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:479

約数の個数: 72

約数和(自身を含む): 75656616

約数和(自身を除く): 44658856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 397, 488, 610, 640, 794, 976, 1220, 1280, 1588, 1952, 1985, 2440, 3176, 3904, 3970, 4880, 6352, 7808, 7940, 9760, 12704, 15616, 15880, 19520, 24217, 25408, 31760, 39040, 48434, 50816, 63520, 78080, 96868, 101632, 121085, 127040, 193736, 242170, 254080, 387472, 484340, 508160, 774944, 968680, 1549888, 1937360, 3099776, 3874720, 6199552, 7749440, 15498880, 30997760]

約数ペア:

[(1, 30997760), (2, 15498880), (4, 7749440), (5, 6199552), (8, 3874720), (10, 3099776), (16, 1937360), (20, 1549888), (32, 968680), (40, 774944), (61, 508160), (64, 484340), (80, 387472), (122, 254080), (128, 242170), (160, 193736), (244, 127040), (256, 121085), (305, 101632), (320, 96868), (397, 78080), (488, 63520), (610, 50816), (640, 48434), (794, 39040), (976, 31760), (1220, 25408), (1280, 24217), (1588, 19520), (1952, 15880), (1985, 15616), (2440, 12704), (3176, 9760), (3904, 7940), (3970, 7808), (4880, 6352)]