21300993

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 15764607

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 89, 131, 203, 261, 267, 393, 609, 623, 801, 917, 1179, 1827, 1869, 2581, 2751, 3799, 5607, 7743, 8253, 11397, 11659, 18067, 23229, 26593, 34191, 34977, 54201, 79779, 81613, 104931, 162603, 239337, 244839, 338111, 734517, 1014333, 2366777, 3042999, 7100331, 21300993]

約数ペア:

[(1, 21300993), (3, 7100331), (7, 3042999), (9, 2366777), (21, 1014333), (29, 734517), (63, 338111), (87, 244839), (89, 239337), (131, 162603), (203, 104931), (261, 81613), (267, 79779), (393, 54201), (609, 34977), (623, 34191), (801, 26593), (917, 23229), (1179, 18067), (1827, 11659), (1869, 11397), (2581, 8253), (2751, 7743), (3799, 5607)]