20984976

素因数分解:

$2^4\times 3^2\times {\mathrm{61}}^1\times {\mathrm{2389}}^1$

素因数の和:2464

約数の個数: 60

約数和(自身を含む): 59716540

約数和(自身を除く): 38731564

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 61, 72, 122, 144, 183, 244, 366, 488, 549, 732, 976, 1098, 1464, 2196, 2389, 2928, 4392, 4778, 7167, 8784, 9556, 14334, 19112, 21501, 28668, 38224, 43002, 57336, 86004, 114672, 145729, 172008, 291458, 344016, 437187, 582916, 874374, 1165832, 1311561, 1748748, 2331664, 2623122, 3497496, 5246244, 6994992, 10492488, 20984976]

約数ペア:

[(1, 20984976), (2, 10492488), (3, 6994992), (4, 5246244), (6, 3497496), (8, 2623122), (9, 2331664), (12, 1748748), (16, 1311561), (18, 1165832), (24, 874374), (36, 582916), (48, 437187), (61, 344016), (72, 291458), (122, 172008), (144, 145729), (183, 114672), (244, 86004), (366, 57336), (488, 43002), (549, 38224), (732, 28668), (976, 21501), (1098, 19112), (1464, 14334), (2196, 9556), (2389, 8784), (2928, 7167), (4392, 4778)]