28337920

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1$

素因数の和:178

約数の個数: 108

約数和(自身を含む): 74062296

約数和(自身を除く): 45724376

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 131, 160, 169, 208, 256, 260, 262, 320, 338, 416, 520, 524, 640, 655, 676, 832, 845, 1040, 1048, 1280, 1310, 1352, 1664, 1690, 1703, 2080, 2096, 2620, 2704, 3328, 3380, 3406, 4160, 4192, 5240, 5408, 6760, 6812, 8320, 8384, 8515, 10480, 10816, 13520, 13624, 16640, 16768, 17030, 20960, 21632, 22139, 27040, 27248, 33536, 34060, 41920, 43264, 44278, 54080, 54496, 68120, 83840, 88556, 108160, 108992, 110695, 136240, 167680, 177112, 216320, 217984, 221390, 272480, 354224, 435968, 442780, 544960, 708448, 885560, 1089920, 1416896, 1771120, 2179840, 2833792, 3542240, 5667584, 7084480, 14168960, 28337920]

約数ペア:

[(1, 28337920), (2, 14168960), (4, 7084480), (5, 5667584), (8, 3542240), (10, 2833792), (13, 2179840), (16, 1771120), (20, 1416896), (26, 1089920), (32, 885560), (40, 708448), (52, 544960), (64, 442780), (65, 435968), (80, 354224), (104, 272480), (128, 221390), (130, 217984), (131, 216320), (160, 177112), (169, 167680), (208, 136240), (256, 110695), (260, 108992), (262, 108160), (320, 88556), (338, 83840), (416, 68120), (520, 54496), (524, 54080), (640, 44278), (655, 43264), (676, 41920), (832, 34060), (845, 33536), (1040, 27248), (1048, 27040), (1280, 22139), (1310, 21632), (1352, 20960), (1664, 17030), (1690, 16768), (1703, 16640), (2080, 13624), (2096, 13520), (2620, 10816), (2704, 10480), (3328, 8515), (3380, 8384), (3406, 8320), (4160, 6812), (4192, 6760), (5240, 5408)]