20946640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1831}}^1$

素因数の和:1868

約数の個数: 80

約数和(自身を含む): 57246336

約数和(自身を除く): 36299696

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 1831, 2288, 2860, 3662, 5720, 7324, 9155, 11440, 14648, 18310, 20141, 23803, 29296, 36620, 40282, 47606, 73240, 80564, 95212, 100705, 119015, 146480, 161128, 190424, 201410, 238030, 261833, 322256, 380848, 402820, 476060, 523666, 805640, 952120, 1047332, 1309165, 1611280, 1904240, 2094664, 2618330, 4189328, 5236660, 10473320, 20946640]

約数ペア:

[(1, 20946640), (2, 10473320), (4, 5236660), (5, 4189328), (8, 2618330), (10, 2094664), (11, 1904240), (13, 1611280), (16, 1309165), (20, 1047332), (22, 952120), (26, 805640), (40, 523666), (44, 476060), (52, 402820), (55, 380848), (65, 322256), (80, 261833), (88, 238030), (104, 201410), (110, 190424), (130, 161128), (143, 146480), (176, 119015), (208, 100705), (220, 95212), (260, 80564), (286, 73240), (440, 47606), (520, 40282), (572, 36620), (715, 29296), (880, 23803), (1040, 20141), (1144, 18310), (1430, 14648), (1831, 11440), (2288, 9155), (2860, 7324), (3662, 5720)]