21236380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1163}}^1$

素因数の和:1266

約数の個数: 48

約数和(自身を含む): 49279104

約数和(自身を除く): 28042724

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 83, 110, 166, 220, 332, 415, 830, 913, 1163, 1660, 1826, 2326, 3652, 4565, 4652, 5815, 9130, 11630, 12793, 18260, 23260, 25586, 51172, 63965, 96529, 127930, 193058, 255860, 386116, 482645, 965290, 1061819, 1930580, 2123638, 4247276, 5309095, 10618190, 21236380]

約数ペア:

[(1, 21236380), (2, 10618190), (4, 5309095), (5, 4247276), (10, 2123638), (11, 1930580), (20, 1061819), (22, 965290), (44, 482645), (55, 386116), (83, 255860), (110, 193058), (166, 127930), (220, 96529), (332, 63965), (415, 51172), (830, 25586), (913, 23260), (1163, 18260), (1660, 12793), (1826, 11630), (2326, 9130), (3652, 5815), (4565, 4652)]