20848275

素因数分解:

$3^2\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:122

約数の個数: 108

約数和(自身を含む): 45574464

約数和(自身を除く): 24726189

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 31, 35, 45, 49, 61, 63, 75, 93, 105, 147, 155, 175, 183, 217, 225, 245, 279, 305, 315, 427, 441, 465, 525, 549, 651, 735, 775, 915, 1085, 1225, 1281, 1395, 1519, 1525, 1575, 1891, 1953, 2135, 2205, 2325, 2745, 2989, 3255, 3675, 3843, 4557, 4575, 5425, 5673, 6405, 6975, 7595, 8967, 9455, 9765, 10675, 11025, 13237, 13671, 13725, 14945, 16275, 17019, 19215, 22785, 26901, 28365, 32025, 37975, 39711, 44835, 47275, 48825, 66185, 68355, 74725, 85095, 92659, 96075, 113925, 119133, 134505, 141825, 198555, 224175, 277977, 330925, 341775, 425475, 463295, 595665, 672525, 833931, 992775, 1389885, 2316475, 2978325, 4169655, 6949425, 20848275]

約数ペア:

[(1, 20848275), (3, 6949425), (5, 4169655), (7, 2978325), (9, 2316475), (15, 1389885), (21, 992775), (25, 833931), (31, 672525), (35, 595665), (45, 463295), (49, 425475), (61, 341775), (63, 330925), (75, 277977), (93, 224175), (105, 198555), (147, 141825), (155, 134505), (175, 119133), (183, 113925), (217, 96075), (225, 92659), (245, 85095), (279, 74725), (305, 68355), (315, 66185), (427, 48825), (441, 47275), (465, 44835), (525, 39711), (549, 37975), (651, 32025), (735, 28365), (775, 26901), (915, 22785), (1085, 19215), (1225, 17019), (1281, 16275), (1395, 14945), (1519, 13725), (1525, 13671), (1575, 13237), (1891, 11025), (1953, 10675), (2135, 9765), (2205, 9455), (2325, 8967), (2745, 7595), (2989, 6975), (3255, 6405), (3675, 5673), (3843, 5425), (4557, 4575)]