21379890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1669}}^1$

素因数の和:1747

約数の個数: 64

約数和(自身を含む): 59639040

約数和(自身を除く): 38259150

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 61, 70, 105, 122, 183, 210, 305, 366, 427, 610, 854, 915, 1281, 1669, 1830, 2135, 2562, 3338, 4270, 5007, 6405, 8345, 10014, 11683, 12810, 16690, 23366, 25035, 35049, 50070, 58415, 70098, 101809, 116830, 175245, 203618, 305427, 350490, 509045, 610854, 712663, 1018090, 1425326, 1527135, 2137989, 3054270, 3563315, 4275978, 7126630, 10689945, 21379890]

約数ペア:

[(1, 21379890), (2, 10689945), (3, 7126630), (5, 4275978), (6, 3563315), (7, 3054270), (10, 2137989), (14, 1527135), (15, 1425326), (21, 1018090), (30, 712663), (35, 610854), (42, 509045), (61, 350490), (70, 305427), (105, 203618), (122, 175245), (183, 116830), (210, 101809), (305, 70098), (366, 58415), (427, 50070), (610, 35049), (854, 25035), (915, 23366), (1281, 16690), (1669, 12810), (1830, 11683), (2135, 10014), (2562, 8345), (3338, 6405), (4270, 5007)]