21687380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7583}}^1$

素因数の和:7616

約数の個数: 48

約数和(自身を含む): 53512704

約数和(自身を除く): 31825324

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7583, 15166, 30332, 37915, 75830, 83413, 98579, 151660, 166826, 197158, 333652, 394316, 417065, 492895, 834130, 985790, 1084369, 1668260, 1971580, 2168738, 4337476, 5421845, 10843690, 21687380]

約数ペア:

[(1, 21687380), (2, 10843690), (4, 5421845), (5, 4337476), (10, 2168738), (11, 1971580), (13, 1668260), (20, 1084369), (22, 985790), (26, 834130), (44, 492895), (52, 417065), (55, 394316), (65, 333652), (110, 197158), (130, 166826), (143, 151660), (220, 98579), (260, 83413), (286, 75830), (572, 37915), (715, 30332), (1430, 15166), (2860, 7583)]