20804070

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{631}}^1$

素因数の和:805

約数の個数: 64

約数和(自身を含む): 57517056

約数和(自身を除く): 36712986

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 157, 210, 314, 471, 631, 785, 942, 1099, 1262, 1570, 1893, 2198, 2355, 3155, 3297, 3786, 4417, 4710, 5495, 6310, 6594, 8834, 9465, 10990, 13251, 16485, 18930, 22085, 26502, 32970, 44170, 66255, 99067, 132510, 198134, 297201, 495335, 594402, 693469, 990670, 1386938, 1486005, 2080407, 2972010, 3467345, 4160814, 6934690, 10402035, 20804070]

約数ペア:

[(1, 20804070), (2, 10402035), (3, 6934690), (5, 4160814), (6, 3467345), (7, 2972010), (10, 2080407), (14, 1486005), (15, 1386938), (21, 990670), (30, 693469), (35, 594402), (42, 495335), (70, 297201), (105, 198134), (157, 132510), (210, 99067), (314, 66255), (471, 44170), (631, 32970), (785, 26502), (942, 22085), (1099, 18930), (1262, 16485), (1570, 13251), (1893, 10990), (2198, 9465), (2355, 8834), (3155, 6594), (3297, 6310), (3786, 5495), (4417, 4710)]